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Thematische Bibliographien / Remanent magnetic induction / Zeitschriftenartikel

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Zeitschriftenartikel zum Thema „Remanent magnetic induction“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 1. Februar 2022

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1

Sternberg, Robert S. "Archaeomagnetism and magnetic anomalies in the American Southwest." GEOPHYSICS 52, no. 3 (1987): 368–71. http://dx.doi.org/10.1190/1.1442311.

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Magnetic surveying is probably the most widely used geophysical technique at archaeological sites (Weymouth and Huggins, 1985). It is useful for locating features in which the magnetic susceptibility contrasts with the magnetic susceptibility of the surroundings because of induced and/or remanent magnetization. A contrast in magnetic induction can arise, for example, when the disturbed soil fill inside a formerly occupied room has a different magnetic susceptibility from the subsoil outside the room (Tite and Mullins, 1971). A contrast in magnetic remanence most commonly occurs when a baked cl

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Noh, Kyubo, Ki Ha Lee, Seokmin Oh, Soon Jee Seol, and Joongmoo Byun. "Numerical evaluation of active source magnetics as a method for imaging high-resolution near-surface magnetic heterogeneity." GEOPHYSICS 82, no. 5 (2017): J27—J38. http://dx.doi.org/10.1190/geo2016-0435.1.

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We have evaluated a geophysical method that uses a low-frequency magnetic source to image subsurface magnetic heterogeneity. This active source approach can be used to image magnetic features at higher resolutions than the conventional passive geomagnetic method. Importantly, this frequency-domain active source approach is independent of the effects of remanent magnetization, which complicates the interpretation of geomagnetic data. We carried out forward modeling of frequency-domain electromagnetic (EM) data and we found that, at frequencies of a few hertz, the magnetostatic response due to t

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Abreu, H., J. R. Teodósio, J. Neto, M. Silva, and C. S. Da Costa Viana. "The Influence of Molybdenum on the Texture and Magnetic Anisotropy of Fe–xMo–5Ni–0.05C Alloys." Textures and Microstructures 31, no. 4 (1999): 231–38. http://dx.doi.org/10.1155/tsm.31.231.

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Diagrams of remanent induction, Br, versus saturation induction, Bs, for Fe–5Ni–xMo–0.05C alloys, where x is equal to 11%, 15% or 19%, were determined for samples 60%, 80%, 90% and 97% cold rolled and magnetically age-annealed at 610°C for 1h. The texture evolution in those alloys was analysed as a function of rolling reduction, by means of the orientation distribution function (ODF). The results show that a sharp {100} 〈110〉 texture component develops in the 11%-Mo alloy for rolling reductions in excess of 90%. This leads to the highest values of the remanent induction, Br, and of the Br/Bs r

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FECHER, GERHARD H., DANIEL EBKE, SIHAM OUARDI, et al. "STATE OFCoANDMnIN HALF-METALLIC FERROMAGNETCo2MnSiEXPLORED BY MAGNETIC CIRCULAR DICHROISM IN HARD X-RAY PHOTOELECTRON EMISSION AND SOFT X-RAY ABSORPTION SPECTROSCOPIES." SPIN 04, no. 04 (2014): 1440017. http://dx.doi.org/10.1142/s2010324714400177.

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The half-metallic Heusler compound Co2MnSi is a very attractive material for spintronic devices because it exhibits very high tunnelling magnetoresistance ratios. This work reports on a spectroscopic investigation of thin Co2MnSi films as they are used as electrodes in magnetic tunnel junctions. The investigated films exhibit a remanent in-plane magnetization with a magnetic moment of about 5 μBwhen saturated, as expected. The low coercive field of only 4 mT indicates soft magnetic behavior. Magnetic dichroism in emission and absorption was measured at the Co and Mn 2p core levels. The photoel

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Kruželák, Ján, Martina Matvejová, Rastislav Dosoudil, and Ivan Hudec. "Barium and strontium ferrite-filled composites based on NBR and SBR." Journal of Elastomers & Plastics 51, no. 5 (2018): 421–39. http://dx.doi.org/10.1177/0095244318792036.

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In the first part of the research, rubber magnetic composites were prepared by incorporation of strontium and barium ferrite in concentration scale ranging from 0 to 200 phr into rubber matrices based on acrylonitrile–butadiene rubber and styrene–butadiene rubber. The main objective was to investigate the influence of the type and content of magnetic filler on the cross-link density, physical–mechanical and magnetic characteristics of the prepared composites. In the second part of the study, the content of magnetic fillers was kept on constant level—200 phr and the main aim was to investigate

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Huang, E.-Wen, Guo-Yu Hung, Soo Yeol Lee, et al. "Mechanical and Magnetic Properties of the High-Entropy Alloys for Combinatorial Approaches." Crystals 10, no. 3 (2020): 200. http://dx.doi.org/10.3390/cryst10030200.

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This review summarizes the state of high-entropy alloys and their combinatorial approaches, mainly considering their magnetic applications. Several earlier studies on high-entropy alloy properties, such as magnetic, wear, and corrosion behavior; different forms, such as thin films, nanowires, thermal spray coatings; specific treatments, such as plasma spraying and inclusion effects; and unique applications, such as welding, are summarized. High-entropy alloy systems that were reported for both their mechanical and magnetic properties are compared through the combination of their Young’s modulu

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Dabas, Michel, and John R. Skinner. "Time‐domain magnetization of soils (VRM), experimental relationship to quadrature susceptibility." GEOPHYSICS 58, no. 3 (1993): 326–33. http://dx.doi.org/10.1190/1.1443416.

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A comparison is made between measurements with a multichannel bipolar pulsed‐induction meter (PIM) and measurements made with a phase‐sensitive susceptibility bridge on more than 211 soil samples from a variety of archaeological sites in Europe. Eddy currents originating from the decay of viscous remanent magnetization (VRM) were measured with the PIM. The in‐phase and out‐of‐phase [Formula: see text] magnetic mass susceptibilies were measured with the susceptibility bridge. Viscous remanent magnetization was measured through eight time sampling intervals on the pulsed‐induction meter, and the

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Kruželák, Ján, Richard Sýkora, Rastislav Dosoudil, and Ivan Hudec. "Rubber Composites Based on Polar Elastomers with Incorporated Modified and Unmodified Magnetic Filler." Advances in Materials Science and Engineering 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/7242891.

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Rubber magnetic composites were prepared by incorporation of unmodified and surface modified strontium ferrite into rubber matrices based on NBR and NBR/PVC. Strontium ferrite was dosed to the rubber matrices in concentration scale ranging from 0 to 100 phr. The main goal was to investigate the influence of the type of ferrite on the curing process, physical-mechanical and magnetic properties of composites. The mutual interactions between the filler and rubber matrices were investigated by determination of cross-link density and SEM analysis. The incorporation of magnetic fillers leads to the

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Gao, Li, Qiu Hong Song, and Jun Ting Yuan. "Effect of Continuous Annealing Parameters on the Microstructure and Magnetic Property of Cold Rolled Dual Phase Steel." Advanced Materials Research 476-478 (February 2012): 241–47. http://dx.doi.org/10.4028/www.scientific.net/amr.476-478.241.

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The effect of continuous annealing parameters on the microstructure and magnetic property of cold rolled dual phase steel (DP steel) are investigated. Correlations of microstructure, magnetic properties and continuous annealing parameters are revealed. The mechanism of the magnetic property varying with continuous annealing process is also discussed. The results show that recrystallization is almost completed when heating to 740°C. For the DP steel soaked in the range of 770°C-830°C and quenched in different temperature, the TEM results indicate its microstructure mainly consists of the ferrit

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Thongsamrit, Wannisa, Thanida Charoensuk, Panissa Saetang, Pongsakorn Jantaratana, Chesta Ruttanapun, and Chitnarong Sirisathitkul. "Effects of Carbon Doping and Annealing Temperature on Magnetic MnAl Powders and MnAl Polymeric Composites." Applied Sciences 11, no. 5 (2021): 2067. http://dx.doi.org/10.3390/app11052067.

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Process parameters leading to magnetic polymer composites, an essential ingredient in the additive manufacturing of rare-earth-free magnets, are investigated. The induction melting of manganese (Mn) and aluminum (Al), and subsequent annealing at 450, 500, or 550 °C for 20 min, gave rise to ferromagnetic τ–MnAl phase, as well as other phases. The nonmagnetic Al4C3 and oxide phases were then removed by the magnetic separation. Magnetic powders from the magnetic separation were incorporated in polylactic acid (PLA) matrix via a solution route. The remanent magnetization as high as 4.3 emu/g in th

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Kruželák, Ján, Andrea Kvasničáková, Rastislav Dosoudil, and Ivan Hudec. "Magnetic composites based on NR and strontium ferrite." Acta Chimica Slovaca 12, no. 1 (2019): 63–69. http://dx.doi.org/10.2478/acs-2019-0010.

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Abstract Two types of composites based on natural rubber (NR) and strontium ferrite were tested in this study. Composites of the first type were prepared by incorporation of strontium ferrite in the concentration range ranging from 0 to 100 phr (parts per hundred rubber) into pure NR based rubber matrix, while with those of the second type, strontium ferrite was dosed in the same concentration level into NR based rubber batch with constant amount of carbon black — 25 phr. For rubber matrices cross-linking, a standard sulfur based curing system was used. This work is focused on the effect of ma

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Billings, Stephen D., Leonard R. Pasion, Laurens Beran, et al. "Unexploded ordnance discrimination using magnetic and electromagnetic sensors: Case study from a former military site." GEOPHYSICS 75, no. 3 (2010): B103—B114. http://dx.doi.org/10.1190/1.3377009.

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In a study at a military range with the objective to discriminate potentially hazardous [Formula: see text] mortars from nonhazardous shrapnel, range, and cultural debris, six different discrimination techniques were tested using data from an array of magnetometers, a time-domain electromagnetic induction (EMI) cart, an array of time-domain sensors, and a time-domain EMI cart with a wider measurement bandwidth. Discrimination was achieved using rule-based or statistical classification of feature vectors extracted from dipole or polarization tensor models fit to detected anomalies. For magnetic

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Tanaka, Saburo, Takeyoshi Ohtani, Yosuke Uchida, Takumi Chigasaki, and Yoshimi Hatsukade. "Metallic Contaminant Detection System Using Multi-Channel Superconducting Quantum Interference Device (SQUID)." Solid State Phenomena 215 (April 2014): 465–69. http://dx.doi.org/10.4028/www.scientific.net/ssp.215.465.

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Metallic particles with outer dimensions smaller than 100 microns in Li-ion battery cannot be detected using a conventional X-ray imaging system. We propose two systems using high Tc SQUIDs: One is a direct detection type and the other is an indirect type. In the direct detection system, an object with a contaminant is magnetized by a permanent magnet and then the remanent field of the contaminant is detected by SQUID. In the indirect detection system, the principle is based on Faradays law of electromagnetic induction. The diameter of the detection coil is 2 to 3 times larger than the SQUID;

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Samardak, Alexey Y., Vladimir S. Pechnikov, Ekaterina V. Sukovatitsina, et al. "Temperature Dependence of Magnetic Saturation in Electrodeposited Nanocrystalline Nickel Films." Solid State Phenomena 215 (April 2014): 292–97. http://dx.doi.org/10.4028/www.scientific.net/ssp.215.292.

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We report on experimental results of the temperature dependence of inductive (total) magnetic moment and remanent magnetic moment at saturation field for electrodeposited nanocrystalline Ni films with thicknesses ranging from 350 nm to 20 μm. We have found that the amplitude of roughness and crystallite size significantly affected the remanent saturation magnetic moment and coercivity.

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Wismogroho, Agus Sukarto, Wahyu Bambang Widayatno, Toto Sudiro, and Didik Aryanto. "The Orientation Study of Ba-Sr Hexaferrite Particles by Parallel Magnetic Field Press." Materials Science Forum 827 (August 2015): 223–28. http://dx.doi.org/10.4028/www.scientific.net/msf.827.223.

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It is well known that an orientation treatment on magnetic particles may increase magnetic flux density than that of those without treatment. In this work, the study on orientation of Barium Stronsium Hexaferrite (Ba-Sr Hexaferrite) particles using parallel system of magnetic field press was conducted to investigate the effect of powder orientation on its characteristic. Samples were compacted while the varied magnetic field induction were given, molded and then sintered at 1200°C for 1 hour. The measurement of magnetic properties showed that orientation process increased the value of magnetic

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Radu, Florin, Vincent Leiner, Kurt Westerholt, et al. "Magnetic induction and domain walls in magnetic thin films at remanence." Journal of Physics: Condensed Matter 17, no. 10 (2005): 1711–18. http://dx.doi.org/10.1088/0953-8984/17/10/025.

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Alwash, Nahedh H., Jafer Fahdel Odah, and Ahmed Namah Mohamed. ""Effect of Substitution of Positive Ion (M+2) on the Physical Properties of M-Fe2O4 "." Muthanna Journal of Pure Science 4, no. 1 (2017): 27–34. http://dx.doi.org/10.52113/2/04.01.2017/27-34.

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"Cobalt, Manganese and Magnesium ferrites powders have been synthesized using chemical mixing method. Calcination and sintering temperatures were 800oC respectively. The characteristics of spinal ferrite have been investigated by XRD technique while the magnetic characterization samples have been done using vibrating sample magnetometer (V.S.M). The magnetic properties such as initial magnetic permeability, quality factor, inductor factor and power loss density are studied under variation of frequency using L.C.R meter as well. Saturation magnetization, coercive field and remanent agnetization

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Ktena, Aphrodite, and Evangelos Hristoforou. "Outlook of Preisach Modeling and Magnetic Non Destructive Testing." Key Engineering Materials 543 (March 2013): 1–4. http://dx.doi.org/10.4028/www.scientific.net/kem.543.1.

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The Preisach formalism is used as a basis for a vector model of magnetic hysteresis in soft magnetic materials subject to tensile stress. The model uses as vector elementary hysteresis operator the Stoner-Wohlfarth mechanism of coherent rotation while the Preisach density is constructed as the weighed sum of probability density functions corresponding to the high and low induction regions. The model reproduces the basic phenomenology of stress-dependent hysteresis: the double peak in differential permeability modeled as the effect of internal demagnetizing fields emerging from residual stresse

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Nguyen, Thao A., Tadashi Yogi, and Steven Lambert. "Microstructures and recording performances of longitudinal media using different atomic mass underlayer materials." Proceedings, annual meeting, Electron Microscopy Society of America 49 (August 1991): 758–59. http://dx.doi.org/10.1017/s0424820100088105.

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Magnetic and recording properties of Co-based longitudinal media are strongly influenced by the underlayer and sputtering conditions. We have investigated the relationship between magnetics, recording noise and microstructural characteristics of CoPtCr media on Mo and W underlayers over a sputtering pressure range 3-24 mtorr. complementing our earlier work of Cr underlayer.The media structure is C/CoPtCr/Mo or W, with thicknesses of 25/25/100 nm respectively. The film structure was sputter-deposited in a DC S-gun magnetron system. The remanence-thickness product, Mft, was kept in the range of

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Yang, Yujie, and Xiansong Liu. "A study on the microstructural and magnetic properties of the Sr0.70-xBaxLa0.30Fe11.78Cu0.22O19 hexagonal ferrites." International Journal of Modern Physics B 28, no. 21 (2014): 1450140. http://dx.doi.org/10.1142/s0217979214501409.

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Hexagonal ferrite Sr 0.70-x Ba x La 0.30 Fe 11.78 Cu 0.22 O 19 (0 ≤ x ≤0.7) magnetic powders and magnets were synthesized by the ceramic process. The phase compositions of the magnetic powders were investigated by X-ray diffraction. There is a single magnetoplumbite phase in the magnetic powders with barium content (x) from 0 to 0.70. The micrographs of the magnets were observed by a field emission scanning electron microscopy. All magnets have formed hexagonal structures and the particles are distributed evenly. Magnetic properties of the magnets were measured by a magnetic properties test in

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Nguyen, Thao A., Tadashi Yogi, and Steven E. Lambert. "The effect of sputtering pressure on microstructure and recording performance of high-density magnetic recording media." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 4 (1990): 770–71. http://dx.doi.org/10.1017/s0424820100176988.

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Understanding the magnetic properties of thin films applicable to high density recording requires detailed knowledge of the microstructure and microchemistry of the film. Interactions such as exchange and magnetostatic as well as anisotropies have been shown theoretically to influence the magnetic properties and recording characteristics of the media. These magnetic interactions and anisotropies are very sensitive to microstructure. This study reports the efTcct of sputtering pressure on the microstructurc and magnetic properties of thin CoPtCr films. The relation between the microstructural f

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Bai, Bo, Jun Zhou, and Shengyun Wang. "Design of High-Performance Magnetorquer with Air Core for CubeSat." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 36, no. 1 (2018): 1–6. http://dx.doi.org/10.1051/jnwpu/20183610001.

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To solve the problem that how to design a big magnetic moment, small size, light weight, low power consumption magnetorquer with air core under the constraint of limited volume and power in CubSate, multiobjective optimization design method is used. Firstly, based on the structure of the square support with multiple layer of the enameled wire wrapped, the magnetic moment model, power consumption model and mass model are deduced from square support size, enameled wire diameter and turn number, respectively. Secondly, according to the model of magnetic moment and power consumption, the multi-obj

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LIU, XIAOYA, LIANXI HU, YUPING LI, and TAIQING DENG. "GRAIN TEXTURE, Nd CONTENT AND PROCESSING CONDITION EFFECTS ON MAGNETIC PROPERTIES OF NdFeB COMPOSITE MAGNETS." Modern Physics Letters B 27, no. 19 (2013): 1341026. http://dx.doi.org/10.1142/s0217984913410261.

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The effects of grain texture, Nd content, processing conditions on magnetic properties and behavior of NdFeB nanocomposite magnet were investigated. The results demonstrate that mechanically activated disproportionation and desorption–recombination combined with plastic deformation process (M-HDDR & D) is an effective way to produce anisotropic NdFeB -type magnet. Magnetic anisotropy significantly enhances the magnetic properties of Nd 16 Fe 76 B 8 nanocomposite magnet, with the intrinsic coercivity (H ci ), magnetic induction (Br), and the energy product (BH) max achieving 0.88 T, 676.8 k

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Liu, Tong, Shicheng Zhang, and Xingguo Li. "Synthesis and Characterization of Fe/Nd2O3 Core–Shell Nanoparticles by Hydrogen Plasma-Metal Reaction." Journal of Nanoscience and Nanotechnology 6, no. 3 (2006): 743–47. http://dx.doi.org/10.1166/jnn.2006.17945.

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Fe/Nd2O3 core–shell nanoparticles (CSNs) with a mean diameter of 35 nm were produced successfully by using hydrogen plasma-metal reaction (HPMR) method. This core–shell structure was confirmed by high resolution transmission electron microscopy (HRTEM), energy dispersion X-ray spectroscopy (EDS), X-ray photoelectron spectral (XPS), and induction-coupled plasma (ICP) spectroscopy. The magnetic properties were measured by vibrating sample magnetometer (VSM). It was found that the mole ratio of Nd to Fe on the nanoparticle surface is 1.2:1, about 7 times of that of the whole nanoparticle. The sat

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Fourlaris, G., T. Gladman, M. Maylin, R. Lane, and G. D. Papadimitriou. "TEM microscopical examination of the magnetic domain boundaries in a super Duplex austenitic-ferritic stainless steel." Proceedings, annual meeting, Electron Microscopy Society of America 54 (August 11, 1996): 1016–17. http://dx.doi.org/10.1017/s0424820100167548.

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It is well known that, due to the good corrosion resistance certain grades of stainless steels have significant applications in marine environments. For the development of certain large naval structures, in addition to the good corrosion resistance, other requirements are imposed such as high strength and toughness coupled with suitable magnetic characteristics.It has been demonstrated in an earlier publication that significant improvements in the coercivity, maximum induction and remanence values can be achieved, by using a 2205 type Duplex austenitic -ferritic stainless steel (DSS) instead o

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Indrani, Decky Jusiana, Bambang Sunendar Purwasasmita, Wisnu Ari Adi, and Jojor Simanjuntak. "Preparation and Characterization of Magnetic Carbonate Apatite/Chitosan/Alginate Composite Scaffold." Materials Science Forum 827 (August 2015): 75–80. http://dx.doi.org/10.4028/www.scientific.net/msf.827.75.

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Treatment for bone cancer has begun to be experimented with ferrimagnetic for magnetic induction hyperthermia. On the other hand, composites of bioceramics and biopolymer have been studied for scaffold as these materials resemble the structure of bone. The current study investigated the magnetization of calcium aluminum ferrite magnetic (CaAl4Fe8O19) incorporated in carbonate apatite, alginate and chitosan, that serves as a scaffold. CaAl4Fe8O19 powder were synthesized using calcium nitrate, aluminium nitrate and ferrous chloride using the sol-gel method. Combining the carbonate apatite/chitos

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Fourlaris, G., T. Gladman, and M. Maylin. "Microscopical Examination of a Super Austenitic Stainless Steel." Microscopy and Microanalysis 3, S2 (1997): 687–88. http://dx.doi.org/10.1017/s1431927600010321.

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Stainless steels have significant applications due to their good corrosion resistance. However, for applications in a marine environment, i.e. for certain types of large naval structures, in addition to the good corrosion resistance, other requirements are imposed on the candidate material such as high strength and toughness coupled with suitable magnetic characteristics.It has been demonstrated in earlier publications that significant improvements in the coercivity, maximum induction and remanence values can be achieved, by using a 2205 type Duplex austenitic -ferritic stainless steel (DSS) i

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Narod, B. B. "The origin of noise and magnetic hysteresis in crystalline permalloy ring-core fluxgate sensors." Geoscientific Instrumentation, Methods and Data Systems Discussions 4, no. 1 (2014): 319–52. http://dx.doi.org/10.5194/gid-4-319-2014.

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Abstract. 6-81.3 Mo permalloy, developed in the 1960s for use in high performance ring-core fluxgate sensors, remains the state-of-the-art for permalloy-cored fluxgate magnetometers. The magnetic properties of 6-81.3, namely magnetocrystalline and magnetoelastic anisotropies and saturation induction are all optimum in the Fe–Ni–Mo system. In such polycrystalline permalloy fluxgate sensors a single phenomenon may cause both fluxgate noise and magnetic hysteresis, explain Barkhausen jumps, remanence and coercivity, and avoid domain denucleation. The phenomenon, domain wall reconnection, is prese

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Humaidi, Syahrul, Ratna A. S, Tua Raja S, Seri Dermayu S, and Perdamean S. "MAGNETIC PROPERTIES OF Cu2+ SUBSTITUTED BaFe12-xCuxO19 (x= 0.1,0.2,0.3,..., 4)." INDONESIAN JOURNAL OF APPLIED PHYSICS 5, no. 01 (2015): 71. http://dx.doi.org/10.13057/ijap.v5i01.264.

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<p>Permanent magnet Barium M-Hexaferrite, BaFe<sub>12-x </sub>Cu<sub>x</sub> O<sub>19 </sub> was synthesized with a wide range of x (x = 0.1, 0.2, …, 3 and 4mole% respectively). The precursor was made by mixing BaCO<sub>3</sub> powder and Fe<sub>2</sub>O<sub>3</sub> powder, whereas CuO powder was used as additive. The powders were mixed together by wet milling in distilled water medium for 20 hours. The powders had been dried at a temperature of 100<sup>0</sup>C for 24 h before calcined at a temperature o

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Narod, B. B. "The origin of noise and magnetic hysteresis in crystalline permalloy ring-core fluxgate sensors." Geoscientific Instrumentation, Methods and Data Systems 3, no. 2 (2014): 201–10. http://dx.doi.org/10.5194/gi-3-201-2014.

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Abstract. Developed in the 1960s for use in high-performance ring-core fluxgate sensors, 6–81.3 Mo permalloy remains the state of the art for permalloy-cored fluxgate magnetometers. The magnetic properties of 6–81.3, namely magnetocrystalline and magnetoelastic anisotropies and saturation induction, are all optimum in the Fe–Ni–Mo system. In such polycrystalline permalloy fluxgate sensors, a single phenomenon may cause both fluxgate noise and magnetic hysteresis; explain Barkhausen jumps, remanence and coercivity; and avoid domain denucleation. This phenomenon, domain wall reconnection, is pre

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Nasruddin, M. N., Tulus Ikhsan Nasution, M. S. Achmad, et al. "The Influence of Sintering Temperature and Mn-Ti Doped BaFe₁₂O₁₉ on the Microwave Absorbing Properties." Applied Mechanics and Materials 754-755 (April 2015): 733–37. http://dx.doi.org/10.4028/www.scientific.net/amm.754-755.733.

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The effect of sintering temperature and Mn-Ti (x = 0.1 and 0.5 % mol) doped in Barium hexaferrite (BaFe12O19) on the microwave absorption properties have been investigated. The BaFe(12-2x)MnxTixO19samples were prepared by using a solid state reaction method from technical grade materials of BaCO3, Fe2O3, MnO2, and TiO2. The permagraph and vector network analyzer (VNA) measurement with frequency of 4 – 10 GHz were used to determine the magnetic properties and microwave absorbing properties, respectively. The magnetic induction and magnetizing force (B-H) curve analysis of BaFe(12-2x)MnxTixO19re

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Mani, Mahesh Kumar, Giuseppe Viola, Mike J. Reece, Jeremy P. Hall, and Sam L. Evans. "Structural and magnetic characterization of spark plasma sintered Fe-50Co alloys." MRS Proceedings 1516 (2012): 201–7. http://dx.doi.org/10.1557/opl.2012.1669.

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ABSTRACTFe-50 wt% Co alloy powders with average particle size of 10 μm were compacted by spark plasma sintering (SPS) at 700, 800, 900 and 950oC by applying 40, 80, 100 MPa uniaxial pressures for 2, 5, 10 minutes. The densities of the samples were found to increase with temperature from 700 to 900oC for constant sintering pressure and time and to decrease for the material sintered at 950oC. The effects of sintering time on density were more significant in samples sintered at 700oC and 800oC than those densified at 900oC. The consequences of small increases in mechanical pressure during sinteri

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Raghasudha, M., D. Ravinder, and P. Veerasomaiah. "Electrical and Magnetic Properties of Mg-Cr and Co-Cr Nano Ferrites Synthesized by Citrate-Gel Method." Solid State Phenomena 241 (October 2015): 69–92. http://dx.doi.org/10.4028/www.scientific.net/ssp.241.69.

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The work deals with the study of electrical and magnetic properties of Magnesium-Chromium and Cobalt-Chromium nanoFerrites for their potential applications synthesized by Citrate-Gel auto-combustion method. Structural Characterization of prepared nanoferrites was performed using XRD, SEM, EDS and TEM. XRD patterns confirmed the formation of homogeneous single phased cubic spinel belonging to the space group Fd3m (in agreement with ICSD Ref. data). It is found that crystallite size of Mg-Cr ferrites was in the range of 7-23nm and that of Co-Cr nanoferrites in the range of 6-12 nm. Structural mo

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Borodko, Y. G., Bokhimi, D. Acosta та ін. "Structural and Magnetic Properties of γ-Fe2O3 Particles Coated with TiO2". MRS Proceedings 403 (1995). http://dx.doi.org/10.1557/proc-403-725.

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Kadin, A. M., R. W. McCallum, G. B. Clemente, and J. E. Keem. "Melt-Spun Permanent Magnet Alloy with Enhanced Isotropic Remanence." MRS Proceedings 80 (1986). http://dx.doi.org/10.1557/proc-80-385.

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AbstractRapid solidification onto a copper quench surface (melt-spinning) has been used to fabricate a high-performance permanent magnet alloy (Ovonic Hi-Rem™) based on the Nd-Fe-B class of materials. Crucial idditions of alloying elements are combined with careful control over quench parameters to yield a random assembly of microcrystallites, with macrosconically isotropic magnetic properties including values of remanent induction that can exceed 10 kG and maximum energy products greater than 20 MGOe. These values exceed those expected from conventional randomly oriented magnets. The enhanced

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Kasama, Takeshi, Rafal E. Dunin-Borkowski, Michael R. Scheinfein, Steven L. Tripp, Jie Liu, and Alexander Wei. "Off-Axis Electron Holography of Self-Assembled Co Nanoparticle Rings." MRS Proceedings 1026 (2007). http://dx.doi.org/10.1557/proc-1026-c18-03.

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AbstractWe use off-axis electron holography in the transmission electron microscope (TEM) to study magnetic flux closure (FC) states in self-assembled nanoparticle rings that each contain between five and eleven 25-nm-diameter Co crystals. Electron holograms are acquired at room temperature in zero-field conditions after applying chosen magnetic fields to the samples in situ in the TEM by partially exciting the conventional microscope objective lens. Mean inner potential contributions to the phase shift are determined by turning the samples over, and subsequently subtracted from each recorded

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"Optimization of methods of nondestructive inspection of the quality of components on the basis of remanent magnetic induction." NDT International 22, no. 1 (1989): 55. http://dx.doi.org/10.1016/0308-9126(89)91314-x.

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He, Cunfu, Wenqiao Dou, Xiucheng Liu, Meng Yang, and Ruifang Zhang. "A Sensitivity Mapping Technique for Tensile Force and Case Depth Characterization Based on Magnetic Minor Hysteresis Loops." Chinese Journal of Mechanical Engineering 33, no. 1 (2020). http://dx.doi.org/10.1186/s10033-020-00508-5.

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AbstractIn the nondestructive testing and evaluation area, magnetic major hysteresis loop measurement technology are widely applied for ferromagnetic material evaluation. However the characterization ability of major hysteresis loop measurement technology greatly varies as the evaluated target properties. To solve this limitation, magnetic minor hysteresis loops, which reflect the responses of ferromagnetic material magnetization in a systematic way, is recommend. Inspired by plenty of information carried by the minor loops, the sensitivity mapping technique was developed to achieve the highes

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Ferreira, Francisco José Fonseca, Raimundo Almeida Filho, and Francisco Valdyr Da Silva. "MODELAGEM DE DADOS AEROMAGNÉTICOS PARA ESTIMAR LARGURA E ESPESSURA DO COMPLEXO MÁFICO/ULTRAMÁFICO DE CAMPO FORMOSO-BA." Boletim Paranaense de Geociências 52 (June 30, 2003). http://dx.doi.org/10.5380/geo.v52i0.4199.

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O complexo máfico/ultramáfico Campo Formoso, no estado da Bahia, é constituído por rochas metamórficas de alto grau, derivadas de peridotitos e piroxenitos do Proterozóico Inferior. Em superfície, ele estende-se por cerca de 40 km, com larguras variando entre 100 e 1.100 metros. A despeito de encerrar as mais importantes mineralizações de cromo conhecidas no Brasil, os conhecimentos geológicos sobre o complexo ainda são bastante limitados. O profundo intemperismo e a presença de coberturas aluviais e coluviais dificultam o mapeamento geológico dessas rochas. Estimativas sobre largura e espessu

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