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Journal articles on the topic 'Ferrite core-shell nanoparticles'

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Published: 4 June 2021
Last updated: 1 February 2022

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1

Swaminathan, R., J. Woods, S. Calvin, Joseph Huth, and M. E. McHenry. "Microstructural Evolution Model of the Sintering Behaviour and Magnetic Properties of NiZn Ferrite Nanoparticles." Advances in Science and Technology 45 (October 2006): 2337–44. http://dx.doi.org/10.4028/www.scientific.net/ast.45.2337.

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The sintering of RF plasma synthesized NiZn ferrite nanoparticles was studied. The as-synthesized nanoparticles have been modeled as having a core-shell structure with richer Zn concentration on the surface. Most Zn cations occupy tetrahedral sites typical of zinc ferrites, while some of the Zn cations occupy tetrahedral sites in a (111) oriented surface layer in the form of ZnO. Ni and Fe cations show no evidence of such disorder and their positions are consistent with the bulk spinel structure. This core-shell structure evolves by decomposition of the as-synthesized nanoparticles into Ni-and
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2

Saykova, Diana, Svetlana Saikova, Yuri Mikhlin, Marina Panteleeva, Ruslan Ivantsov, and Elena Belova. "Synthesis and Characterization of Core–Shell Magnetic Nanoparticles NiFe2O4@Au." Metals 10, no. 8 (2020): 1075. http://dx.doi.org/10.3390/met10081075.

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In this study, NiFe2O4@Au core–shell nanoparticles were prepared by the direct reduction of gold on the magnetic surface using amino acid methionine as a reducer and a stabilizing agent simultaneously. The obtained nanoparticles after three steps of gold deposition had an average size of about 120 nm. The analysis of particles was performed by X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, and UV-Vis spectroscopy techniques. The results indicate successful synthesis of core–shell particles with the magnetic core, which consists of a few agglomerated nick
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3

Etier, M., Y. Gao, V. V. Shvartsman, et al. "Cobalt Ferrite/Barium Titanate Core/Shell Nanoparticles." Ferroelectrics 438, no. 1 (2012): 115–22. http://dx.doi.org/10.1080/00150193.2012.743773.

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4

Zamorskyi, V. O., Ya M. Lytvynenko, A. M. Pogorily, A. I. Tovstolytkin, S. O. Solopan, and A. G. Belous. "Magnetic Properties of Fe3O4/CoFe2O4 Composite Nanoparticles with Core/Shell Architecture." Ukrainian Journal of Physics 65, no. 10 (2020): 904. http://dx.doi.org/10.15407/ujpe65.10.904.

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Magnetic properties of the sets of Fe3O4(core)/CoFe2O4(shell) composite nanoparticles with a core diameter of about 6.3 nm and various shell thicknesses (0, 1.0, and 2.5 nm), as well as the mixtures of Fe3O4 and CoFe2O4 nanoparticles taken in the ratios corresponding to the core/shell material contents in the former case, have been studied. The results of magnetic research showed that the coating of magnetic nanoparticles with a shell gives rise to the appearance of two simultaneous effects: the modification of the core/shell interface parameters and the parameter change in both the nanopartic
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5

Darwish, Mohamed S. A., Hohyeon Kim, Hwangjae Lee, Chiseon Ryu, Jae Young Lee, and Jungwon Yoon. "Engineering Core-Shell Structures of Magnetic Ferrite Nanoparticles for High Hyperthermia Performance." Nanomaterials 10, no. 5 (2020): 991. http://dx.doi.org/10.3390/nano10050991.

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Magnetic ferrite nanoparticles (MFNs) with high heating efficiency are highly desirable for hyperthermia applications. As conventional MFNs usually show low heating efficiency with a lower specific loss power (SLP), extensive efforts to enhance the SLP of MFNs have been made by varying the particle compositions, sizes, and structures. In this study, we attempted to increase the SLP values by creating core-shell structures of MFNs. Accordingly, first we synthesized three different types of core ferrite nanoparticle of magnetite (mag), cobalt ferrite (cf) and zinc cobalt ferrite (zcf). Secondly,
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6

Blanco-Esqueda, I. G., G. Ortega-Zarzosa, J. R. Martínez, and A. L. Guerrero. "Preparation and Characterization of Nickel Ferrite-SiO2/Ag Core/Shell Nanocomposites." Advances in Materials Science and Engineering 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/678739.

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Magnetic composites with silver nanoparticles bonded to their surface were successfully prepared using a simple chemical method. By means of a sol-gel technique, nickel ferrite nanoparticles have been prepared and coated with silica to control and avoid their magnetic agglomeration. The structural and magnetic properties of the nanoparticles were studied in function of the annealing temperature. Then, silver nanoparticles were incorporated by hydrolysis-condensation of tetraethyl orthosilicate, which contains silver nitrate on the surface of the nickel ferrite-SiO2core/shell. Samples were char
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7

Filomeno, Cleber Lopes, Epitácio Pinto Marinho, Renata Aquino, et al. "Electrodic reduction of core–shell ferrite magnetic nanoparticles." New Journal of Chemistry 40, no. 7 (2016): 6405–13. http://dx.doi.org/10.1039/c5nj03659c.

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8

Klekotka, Urszula, Beata Piotrowska, Dariusz Satuła, and Beata Kalska-Szostko. "Modified ferrite core-shell nanoparticles magneto-structural characterization." Applied Surface Science 444 (June 2018): 161–67. http://dx.doi.org/10.1016/j.apsusc.2018.02.212.

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9

Rostamzadehmansoor, S., Mirabdullah Seyed Sadjadi, K. Zare, and Nazanin Farhadyar. "Preparation of Ferromagnetic Manganese Doped Cobalt Ferrite-Silica Core Shell Nanoparticles for Possible Biological Application." Defect and Diffusion Forum 334-335 (February 2013): 19–25. http://dx.doi.org/10.4028/www.scientific.net/ddf.334-335.19.

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Magnetic oxide nanoparticles with proper surface coatings are increasingly being evaluated for clinical applications such as hyperthermia, drug delivery, magnetic resonance imaging, transfection and cell/protein separations. In this work, we investigated synthesis, magnetic properties of silica coated metal ferrite, (CoFe2O4)/SiO2 and manganese doped cobalt ferrite nanoparticles (Mnx-Co1-xFe2O4 with x = 0.02, 0.04 and 0.06)/SiO2 for possible biomedical application. All the ferrites nanoparticles were prepared by co-precipitation method using FeCl3.6H2O, CoCl2.6H2O and MnCl2.2H2O as precursors,
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10

HONARBAKHSH-RAOUF, A., H. R. EMAMIAN, A. YOURDKHANI, and A. ATAIE. "SYNTHESIS AND CHARACTERIZATION OF CoFe2O4/Ni0.5Zn0.5Fe2O4 CORE/SHELL MAGNETIC NANOCOMPOSITE BY THE WET CHEMICAL ROUTE." International Journal of Modern Physics B 24, no. 29 (2010): 5807–14. http://dx.doi.org/10.1142/s0217979210056098.

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A cobalt ferrite/nickel-zinc ferrite core/shell nanocomposite was synthesized by a polymerized complex method using iron citrate, cobalt nitrate, nickel nitrate, zinc nitrate, citric acid, ethylene glycol, benzoic acid and sodium citrate as starting materials. The XRD, TEM and VSM techniques were employed to evaluate the phase composition, morphology and magnetic properties of the samples. The XRD results indicated the coexistence of characteristic reflections of CoFe 2 O 4 and Ni 0.5 Zn 0.5 Fe 2 O 4 spinel ferrites in the composite sample. The core/shell structure of the composite sample has
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11

Rio, Irina S. R., Ana Rita O. Rodrigues, Carolina P. Rodrigues, et al. "Development of Novel Magnetoliposomes Containing Nickel Ferrite Nanoparticles Covered with Gold for Applications in Thermotherapy." Materials 13, no. 4 (2020): 815. http://dx.doi.org/10.3390/ma13040815.

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Multifunctional nanosystems combining magnetic and plasmonic properties are a promising approach for cancer therapy, allowing magnetic guidance and a local temperature increase. This capability can provide a triggered drug release and synergistic cytotoxic effect in cancer cells. In this work, nickel ferrite/gold nanoparticles were developed, including nickel ferrite magnetic nanoparticles decorated with plasmonic gold nanoparticles and core/shell nanostructures (with a nickel ferrite core and a gold shell). These nanoparticles were covered with a surfactant/lipid bilayer, originating liposome
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12

Morrison, Shannon A., Christopher L. Cahill, Everett E. Carpenter, Scott Calvin, and Vincent G. Harris. "Atomic Engineering of Mixed Ferrite and Core–Shell Nanoparticles." Journal of Nanoscience and Nanotechnology 5, no. 9 (2005): 1323–44. http://dx.doi.org/10.1166/jnn.2005.303.

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13

Liu, Wen Bao, Bing Jun Yang, Wan Li Yang, Wen Li, Jiao Yang, and Mei Zhen Gao. "Synthesis of Magnetic Particles and Silica Coated Core-Shell Materials." Advanced Materials Research 631-632 (January 2013): 490–93. http://dx.doi.org/10.4028/www.scientific.net/amr.631-632.490.

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Ferrite particles were prepared by hydrothermal process at high temperature. The characterization of ferrite was examined by XRD, Mössbauer spectrum, and SEM. The XRD and Mössbauer spectrum confirmed that ferrite particles have a Fe3O4 inverse spinel structure, the SEM results show that each Fe3O4 particles were composed of many smaller magnetite nanoparticles. The as-synthesized Fe3O4 particles were modified by sodium citrate then further coated with SiO2 layer through the modified stöber method. The composited Fe3O4@SiO2 microspheres exhibited outstanding monodispersity and magnetic property
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14

Sanna Angotzi, Marco, Valentina Mameli, Claudio Cara, et al. "On the synthesis of bi-magnetic manganese ferrite-based core–shell nanoparticles." Nanoscale Advances 3, no. 6 (2021): 1612–23. http://dx.doi.org/10.1039/d0na00967a.

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15

Chaturvedi, Smita, Raja Das, Pankaj Poddar, and Sulabha Kulkarni. "Tunable band gap and coercivity of bismuth ferrite–polyaniline core–shell nanoparticles: the role of shell thickness." RSC Advances 5, no. 30 (2015): 23563–68. http://dx.doi.org/10.1039/c5ra00933b.

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We report a tunable band gap of bismuth ferrite–polyaniline core–shell nanoparticles from 2.24 to 1.98 eV and the variation of coercivity from 118 to 100 Oe, by varying the thickness of the polyaniline shell.
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16

Dadaei, Mahla, and Hossein Naeimi. "Guanidine functionalized core–shell structured magnetic cobalt-ferrite: an efficient nanocatalyst for sonochemical synthesis of spirooxindoles in water." RSC Advances 11, no. 25 (2021): 15360–68. http://dx.doi.org/10.1039/d1ra00967b.

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The core/shell nanoparticles have a wide range of applications in the science of chemistry and biomedical. The core-shell material can be different and modified by changing the ingredients or the ratio of core to the shell.
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17

Hamad, Hesham, Mona Abd El-Latif, Abd El-Hady Kashyout, Wagih Sadik, and Mohamed Feteha. "Synthesis and characterization of core–shell–shell magnetic (CoFe2O4–SiO2–TiO2) nanocomposites and TiO2nanoparticles for the evaluation of photocatalytic activity under UV and visible irradiation." New Journal of Chemistry 39, no. 4 (2015): 3116–28. http://dx.doi.org/10.1039/c4nj01821d.

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CoFe<sub>2</sub>O<sub>4</sub>–SiO<sub>2</sub>–TiO<sub>2</sub>core–shell–shell magnetic nanocomposites have been prepared by coating cobalt ferrite nanoparticles with double layers of SiO<sub>2</sub>–TiO<sub>2</sub>.
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18

Rodrigues, Ana, Joana Matos, Armando Nova Dias, et al. "Development of Multifunctional Liposomes Containing Magnetic/Plasmonic MnFe2O4/Au Core/Shell Nanoparticles." Pharmaceutics 11, no. 1 (2018): 10. http://dx.doi.org/10.3390/pharmaceutics11010010.

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Multifunctional liposomes containing manganese ferrite/gold core/shell nanoparticles were developed. These magnetic/plasmonic nanoparticles were covered by a lipid bilayer or entrapped in liposomes, which form solid or aqueous magnetoliposomes as nanocarriers for simultaneous chemotherapy and phototherapy. The core/shell nanoparticles were characterized by UV/Visible absorption, X-Ray Diffraction (XRD), Transmission Electron Microscopy (TEM), and Superconducting Quantum Interference Device (SQUID). The magnetoliposomes were characterized by Dynamic Light Scattering (DLS) and TEM. Fluorescence-
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19

Hu, Jun, and Ai Min Chen. "Synthesis and Characteristic of NiFe/NiFe2O4 Core-Shell Magnetic Nanocomposite Particles ." Advanced Materials Research 486 (March 2012): 65–69. http://dx.doi.org/10.4028/www.scientific.net/amr.486.65.

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NiFe/NiFe2O4 core-shell bimagnetic nanocomposite particles were successfully synthesized by colloidal chemical method combined with H2 reduction. The whole structural evolution process has been well studied through analysis of X-ray diffraction patterns and Infrared spectra. It has been found that FeNi alloy concentrated in the ferrite phase. The core/shell structure, a FeNi alloy core surrounded by NiFe2O4 spinel oxide shell were verified by X-ray powder diffraction (XRD), fourier transform infrared spectroscopy (FT-IR) and transmission electron microscopy (TEM). The influence of post H2 heat
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20

Lavorato, Gabriel C., Aldo A. Rubert, Yutao Xing, et al. "Shell-mediated control of surface chemistry of highly stoichiometric magnetite nanoparticles." Nanoscale 12, no. 25 (2020): 13626–36. http://dx.doi.org/10.1039/d0nr02069a.

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Magnetite nanostructures gradually oxidize under environmental conditions. Here we demonstrate that a Zn-ferrite epitaxial coating protects magnetite cores from oxidation and provides a core/shell system with enhanced magnetic properties.
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21

Pack, Chan-Gi, Bjorn Paulson, Yeonhee Shin, Min Kyo Jung, Jun Sung Kim, and Jun Ki Kim. "Variably Sized and Multi-Colored Silica-Nanoparticles Characterized by Fluorescence Correlation Methods for Cellular Dynamics." Materials 14, no. 1 (2020): 19. http://dx.doi.org/10.3390/ma14010019.

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Controlling the uptake of nanoparticles into cells so as to balance therapeutic effects with toxicity is an essential unsolved problem in the development of nanomedicine technologies. From this point of view, it is useful to use standard nanoparticles to quantitatively evaluate the physical properties of the nanoparticles in solution and in cells, and to analyze the intracellular dynamic motion and distribution of these nanoparticles at a single-particle level. In this study, standard nanoparticles are developed based on a variant silica-based nanoparticle incorporating fluorescein isothiocyan
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22

Masala, Ombretta, Darin Hoffman, Nalini Sundaram, et al. "Preparation of magnetic spinel ferrite core/shell nanoparticles: Soft ferrites on hard ferrites and vice versa." Solid State Sciences 8, no. 9 (2006): 1015–22. http://dx.doi.org/10.1016/j.solidstatesciences.2006.04.014.

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23

Jovic, Natasa, Bratislav Antic, Gerardo F. Goya, and Vojislav Spasojevic. "Magnetic Properties of Lithium Ferrite Nanoparticles with a Core/Shell Structure." Current Nanoscience 8, no. 5 (2012): 651–58. http://dx.doi.org/10.2174/157341312802884391.

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24

Nonkumwong, Jeeranan, Phakkhananan Pakawanit, Angkana Wipatanawin, Pongsakorn Jantaratana, Supon Ananta, and Laongnuan Srisombat. "Synthesis and cytotoxicity study of magnesium ferrite-gold core-shell nanoparticles." Materials Science and Engineering: C 61 (April 2016): 123–32. http://dx.doi.org/10.1016/j.msec.2015.12.021.

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25

Gomes, J. A., G. M. Azevedo, J. Depeyrot, et al. "Structural, Chemical, and Magnetic Investigations of Core–Shell Zinc Ferrite Nanoparticles." Journal of Physical Chemistry C 116, no. 45 (2012): 24281–91. http://dx.doi.org/10.1021/jp3055069.

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26

Maaz, K., M. Usman, S. Karim, A. Mumtaz, S. K. Hasanain, and M. F. Bertino. "Magnetic response of core-shell cobalt ferrite nanoparticles at low temperature." Journal of Applied Physics 105, no. 11 (2009): 113917. http://dx.doi.org/10.1063/1.3139293.

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27

Habib, A. H., C. L. Ondeck, P. Chaudhary, M. R. Bockstaller, and M. E. McHenry. "Evaluation of iron-cobalt/ferrite core-shell nanoparticles for cancer thermotherapy." Journal of Applied Physics 103, no. 7 (2008): 07A307. http://dx.doi.org/10.1063/1.2830975.

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28

Lu, Zhou Li, Peng Zhao Gao, Rui Xue Ma, Yu Kun Sun, and Dong Yun Li. "Preparation, Characterization and Visible-Light Catalytic Activity of Core-Shell Structure NiFe2O4@TiO2 Ferrite Nanoparticles." Key Engineering Materials 680 (February 2016): 272–77. http://dx.doi.org/10.4028/www.scientific.net/kem.680.272.

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The core-shell structure NiFe2O4@TiO2 nanoparticles was successfully prepared using a sol-gel method, the influence of shell thickness and calcination temperatures on the composition, microstructure, magnetic properties and visible-light catalytic activity of the nanoparticles was studied by XRD, TEM, Uv–vis, vibrating sample magnetometer, etc. Results showed the main composition of core in NiFe2O4@TiO2 was spinel ferrite, and the shell was anatase TiO2, and theshell thickness increased significantly with the increase of TiO2 content, ranging from 10nm to 50nm. The Ms and Mr of nanoparticles d
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29

Susanto, Iwan, Nugroho Eko Setijogiarto, Tia Rahmiati, Fachruddin Fachruddin, Arifia Ekayuliana, and Jauhari Ali. "REKAYASA NANO KOMPOSIT TITANIUM OSKIDA SEBAGAI KATALIS PEREDUKSI ZAT WARNA TEKSTIL." Jurnal Poli-Teknologi 18, no. 3 (2019): 281–90. http://dx.doi.org/10.32722/pt.v18i3.2392.

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The core shell structure of TiO2@SiO2@ferrite(Ni-Cu-Zn) as composite nanoparticles for magnetic photocatalyst were successfully prepared in this study. These particles were synthesized continually by the sol-gel method and they are tested for their performance using MB dye solution. The magnetic core particles used in the synthesis were (Ni-Cu-Zn) ferrite with size of 20-60 nm, while SiO2 and TiO2 layers were formed using tetraethoxysilane and tetrabutly titanate. Some characterizations and testinghavecarried out to investigate the crystal structure, magnetic properties, surface conditions and
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30

Colie, Maria, Dan Eduard Mihaiescu, Daniela Istrati, et al. "Synthesis and Characterization of a Core-shell Material Using YBa2Cu3O7-d and Cobalt Ferrite Nanoparticles." Revista de Chimie 69, no. 12 (2019): 3345–48. http://dx.doi.org/10.37358/rc.18.12.6746.

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In this paper we describe the synthesis of a core-shell material using yttrium superconducting ceramic material (YBCO) and cobalt ferrite nanoparticles in order to obtain a nanostructured material with magnetic properties. The advantages of such material aim the selective deposition of nanofilms oriented in magnetic fields. To obtain this core-shell material, the solutions of the nitrates were first obtained by dissolving the salts in demineralised water. The suspension with cobalt ferrite nanoparticles was obtained by co-precipitation method. To obtain YBa2Cu3O7-�- coated magnetic nanoparticl
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31

Lachowicz, Dorota, Roma Wirecka, Weronika Górka-Kumik, et al. "Gradient of zinc content in core–shell zinc ferrite nanoparticles – precise study on composition and magnetic properties." Physical Chemistry Chemical Physics 21, no. 42 (2019): 23473–84. http://dx.doi.org/10.1039/c9cp03591e.

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32

Gomes, Juliano de A., Marcelo H. Sousa, Francisco A. Tourinho, et al. "Synthesis of Core−Shell Ferrite Nanoparticles for Ferrofluids: Chemical and Magnetic Analysis." Journal of Physical Chemistry C 112, no. 16 (2008): 6220–27. http://dx.doi.org/10.1021/jp7097608.

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33

Petchsang, N., W. Pon-On, J. H. Hodak, and I. M. Tang. "Magnetic properties of Co-ferrite-doped hydroxyapatite nanoparticles having a core/shell structure." Journal of Magnetism and Magnetic Materials 321, no. 13 (2009): 1990–95. http://dx.doi.org/10.1016/j.jmmm.2008.12.027.

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34

Popov, M., G. Sreenivasulu, V. M. Petrov, F. A. Chavez, and G. Srinivasan. "High frequency magneto-dielectric effects in self-assembled ferrite-ferroelectric core-shell nanoparticles." AIP Advances 4, no. 9 (2014): 097117. http://dx.doi.org/10.1063/1.4895591.

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35

Srinivasan, G., M. Popov, G. Sreenivasulu, V. M. Petrov, and F. Chavez. "Millimeter-wave magneto-dielectric effects in self-assembled ferrite-ferroelectric core-shell nanoparticles." Journal of Applied Physics 117, no. 17 (2015): 17A309. http://dx.doi.org/10.1063/1.4908305.

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36

Sousa, E. C., H. R. Rechenberg, J. Depeyrot, et al. "In-field Mossbauer study of disordered surface spins in core/shell ferrite nanoparticles." Journal of Applied Physics 106, no. 9 (2009): 093901. http://dx.doi.org/10.1063/1.3245326.

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37

Klekotka, Urszula, Beata Piotrowska, Dariusz Satuła, Michael Giersig, and Beata Kalska-Szostko. "Ferrite Core-Shell Nanoparticles Synthesized by Seed-Based Method Characterization and Potential Application." physica status solidi (a) 215, no. 16 (2018): 1700901. http://dx.doi.org/10.1002/pssa.201700901.

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38

Grasset, F., N. Labhsetwar, D. Li, et al. "Synthesis and Magnetic Characterization of Zinc Ferrite Nanoparticles with Different Environments: Powder, Colloidal Solution, and Zinc Ferrite−Silica Core−Shell Nanoparticles." Langmuir 18, no. 21 (2002): 8209–16. http://dx.doi.org/10.1021/la020322b.

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39

Masala, Ombretta, and Ram Seshadri. "Spinel Ferrite/MnO Core/Shell Nanoparticles: Chemical Synthesis of All-Oxide Exchange Biased Architectures." Journal of the American Chemical Society 127, no. 26 (2005): 9354–55. http://dx.doi.org/10.1021/ja051244s.

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40

Reddy, Kakarla Raghava, Kwang-Pill Lee, Ju Young Kim, and Youngil Lee. "Self-Assembly and Graft Polymerization Route to Monodispersed Fe3O4@SiO2—Polyaniline Core–Shell Composite Nanoparticles: Physical Properties." Journal of Nanoscience and Nanotechnology 8, no. 11 (2008): 5632–39. http://dx.doi.org/10.1166/jnn.2008.209.

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This study describes the synthesis of monodispersed core–shell composites of silica-modified magnetic nanoparticles and conducting polyaniline by self-assembly and graft polymerization. Magnetic ferrite nanoparticles (Fe3O4) were prepared by coprecipitation of Fe+2 and Fe+3 ions in alkaline solution, and then silananized. The silanation of magnetic particles (Fe3O4@SiO2) was carried out using 3-bromopropyltrichlorosilane (BPTS) as the coupling agent. FT-IR spectra indicated the presence of Fe—O—Si chemical bonds in Fe3O4@SiO2. Core–shell type nanocomposites (Fe3O4@SiO2/PANI) were prepared by g
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41

Kalska-Szostko, Beata, Urszula Wykowska, Dariusz Satula, and Per Nordblad. "Thermal treatment of magnetite nanoparticles." Beilstein Journal of Nanotechnology 6 (June 23, 2015): 1385–96. http://dx.doi.org/10.3762/bjnano.6.143.

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This paper presents the results of a thermal treatment process for magnetite nanoparticles in the temperature range of 50–500 °C. The tested magnetite nanoparticles were synthesized using three different methods that resulted in nanoparticles with different surface characteristics and crystallinity, which in turn, was reflected in their thermal durability. The particles were obtained by coprecipitation from Fe chlorides and decomposition of an Fe(acac)3 complex with and without a core–shell structure. Three types of ferrite nanoparticles were produced and their thermal stability properties wer
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42

Cernea, Marin, Roxana Radu, Harvey Amorín, et al. "Lead-Free BNT–BT0.08/CoFe2O4 Core–Shell Nanostructures with Potential Multifunctional Applications." Nanomaterials 10, no. 4 (2020): 672. http://dx.doi.org/10.3390/nano10040672.

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Herein we report on novel multiferroic core–shell nanostructures of cobalt ferrite (CoFe2O4)–bismuth, sodium titanate doped with barium titanate (BNT–BT0.08), prepared by a two–step wet chemical procedure, using the sol–gel technique. The fraction of CoFe2O4 was varied from 1:0.5 to 1:1.5 = BNT–BT0.08/CoFe2O4 (molar ratio). X–ray diffraction confirmed the presence of both the spinel CoFe2O4 and the perovskite Bi0.5Na0.5TiO3 phases. Scanning electron microscopy analysis indicated that the diameter of the core–shell nanoparticles was between 15 and 40 nm. Transmission electron microscopy data sh
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43

Rawat, Jagdish, Subhasis Rana, Radhey Srivastava, and R. Devesh K. Misra. "Antimicrobial activity of composite nanoparticles consisting of titania photocatalytic shell and nickel ferrite magnetic core." Materials Science and Engineering: C 27, no. 3 (2007): 540–45. http://dx.doi.org/10.1016/j.msec.2006.05.021.

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44

Kevadiya, Bhavesh D., Aditya N. Bade, Christopher Woldstad, et al. "Development of europium doped core-shell silica cobalt ferrite functionalized nanoparticles for magnetic resonance imaging." Acta Biomaterialia 49 (February 2017): 507–20. http://dx.doi.org/10.1016/j.actbio.2016.11.071.

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Aurélio, David, and Jana Vejpravova. "Understanding Magnetization Dynamics of a Magnetic Nanoparticle with a Disordered Shell Using Micromagnetic Simulations." Nanomaterials 10, no. 6 (2020): 1149. http://dx.doi.org/10.3390/nano10061149.

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Spin disorder effects influence magnetization dynamics and equilibrium magnetic properties of real nanoparticles (NPs). In this work, we use micromagnetic simulations to try to better understand these effects, in particular, on how the magnetization reversal is projected in the character of the hysteresis loops at different temperatures. In our simulation study, we consider a prototype NP adopting a magnetic core-shell model, with magnetically coherent core and somewhat disordered shell, as it is one of the common spin architectures in real NPs. The size of the core is fixed to 5.5 nm in diame
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46

Paula, Fábio Luís de Oliveira. "SAXS Analysis of Magnetic Field Influence on Magnetic Nanoparticle Clusters." Condensed Matter 4, no. 2 (2019): 55. http://dx.doi.org/10.3390/condmat4020055.

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In this work, we investigated the local colloidal structure of ferrofluid, in the presence of the external magnetic field. The nanoparticles studied here are of the core-shell type, with the core formed by manganese ferrite and maghemite shell, and were synthesized by the coprecipitation method in alkaline medium. Measures of Small Angle X-ray Scattering (SAXS) performed in the Brazilian Synchrotron Light Laboratory (LNLS) were used for the study of the local colloidal structure of ferrofluid, so it was possible to study two levels of structure, cluster and isolated particles, in the regimes w
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Ravariu, Cristian, Dan Mihaiescu, Alina Morosan, Bogdan Stefan Vasile, and Bogdan Purcareanu. "Sulpho-Salicylic Acid Grafted to Ferrite Nanoparticles for n-Type Organic Semiconductors." Nanomaterials 10, no. 9 (2020): 1787. http://dx.doi.org/10.3390/nano10091787.

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A disadvantage of the use of pentacene and typical organic materials in electronics is that their precursors are toxic for manufacturers and the environment. To the best of our knowledge, this is the first report of an n-type non-toxic semiconductor for organic transistors that uses sulpho-salicylic acid—a stable, electron-donating compound with reduced toxicity—grafted on a ferrite core–shell and a green synthesis method. The micro-physical characterization indicated a good dispersion stability and homogeneity of the obtained nanofilms using the dip-coating technique. The in-situ electrical c
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Li, Yun Tao, Jing Liu, Li Wang, et al. "Preparation and Characterization of Mno.5Zno.5Fe2O4 @Au Composite Nanoparticles and its Anti-Tumor Effect on Glioma Cells." Applied Mechanics and Materials 138-139 (November 2011): 907–13. http://dx.doi.org/10.4028/www.scientific.net/amm.138-139.907.

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To explore the preparation method and characters of a new gold nanoshells on maganese-zinc ferrite (Mno.5Zno.5Fe2O4@Au) composite nanoparticles. Mno.5Zno.5Fe2O4@Au nanoparticles with core/shell structure were synthesized by reduction of Au3+ with trisodium citrate in the presence of Mno.5Zno.5Fe2O4 magnetic nanoparticles (MZF-NPs) prepared by improved co-preciption with the character of superparamagnetism and detected by transmission electron microscopy (TEM), scanning electron microscopy (SEM), x-ray diffraction (XRD), energy dispersive spectrometry (EDS) and Marven laser particle size analyz
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Naik, P. P., R. B. Tangsali, B. Sonaye, and S. Sugur. "Radiation Stimulated Permanent Alterations in Structural and Electrical Properties of Core-Shell Mn-Zn Ferrite Nanoparticles." Journal of Nano Research 24 (September 2013): 194–202. http://dx.doi.org/10.4028/www.scientific.net/jnanor.24.194.

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A series of core-shell type nanoparticle samples of MnxZn1-xFe2O4 were prepared by auto-combustion technique with x=0.3, 0.5, 0.7, 1.0. Subsequent to the structural and electrical property investigation the samples were irradiated with gamma radiation for different time intervals using 60Co source. A significant decrease in lattice parameter and particle size was observed in gamma irradiated samples. Electrical resistivity of irradiated samples was found to decrease with the increase in γ-radiation dose. Frequency and temperature dependent dielectric constant and dissipation constant measureme
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Kuo, Shuo-Hsiu, Po-Ting Wu, Jing-Yin Huang, Chin-Pao Chiu, Jiashing Yu, and Mei-Yi Liao. "Fabrication of Anisotropic Cu Ferrite-Polymer Core-Shell Nanoparticles for Photodynamic Ablation of Cervical Cancer Cells." Nanomaterials 10, no. 12 (2020): 2429. http://dx.doi.org/10.3390/nano10122429.

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In this work we developed methylene blue-immobilized copper-iron nanoparticles (MB-CuFe NPs) through a facile one-step hydrothermal reaction to achieve a better phototherapeutic effect. The Fe/Cu ratio of the CuFe NPs was controllable by merely changing the loading amount of iron precursor concentration. The CuFe NPs could serve as a Fenton catalyst to convert hydrogen peroxide (H2O2) into reactive oxygen species (ROS), while the superparamagnetic properties also suggest magnetic resonance imaging (MRI) potential. Furthermore, the Food and Drug Administration (FDA)-approved MB photosensitizer
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