Relevant bibliographies by topics / Ferrite core-shell nanoparticles

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  1. Journal articles
  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'Ferrite core-shell nanoparticles'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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

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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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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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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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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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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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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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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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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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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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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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Dissertations / Theses on the topic "Ferrite core-shell nanoparticles"

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Martins, Da Silva Fernando Henrique. "Etude structurale, distribution cationique et état d'oxydation dans des nanoparticules magnétiques de ferrite du type coeur-coquille." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066102/document.

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Nous explorons les propriétés structurales de nanoparticules cœur-coquille, avec un cœur de ferrite MFe2O4 (M = Mn et Co) ou de ferrite mixte Mn-Zn. Ces nanoparticules sont obtenues par co-précipitation hydrothermique et sont dispersées en milieu acide par un traitement de surface empirique au nitrate ferrique, protégeant les nanograins contre une dissociation chimique par une fine couche superficielle de maghémite. La fraction volumique du cœur, de la coquille et l’épaisseur de la couche superficielle sont déterminées par dosage chimique. Nous suivons les changements structurels des nanocrist
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Junior, João Batista Souza. "Nanopartículas magnéticas de cobalto metálico e ferrita de cobalto recobertas com ouro como materiais biocompatíveis visando aplicações em biomedicina." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/75/75134/tde-24072012-165718/.

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Atualmente, as nanopartículas superparamagnéticas despertam enorme interesse científico devido sua grande variedade de aplicações em biomedicina, tanto na área de diagnóstico quanto no tratamento de enfermidades. Embora muitos materiais vem sendo estudados, os óxidos de ferro (magnetita e maghemita) apresentam maiores avanços nos estudos para aplicações em medicina. A preferência por óxidos de ferro se deve a baixa toxicidade destas partículas quando comparado as nanopartículas metálicas ou ligas. Entretanto, as nanopartículas destes óxidos possuem baixas magnetizações de saturação que diminue
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Cabreira, Gomes Rafael. "Dispersions de nanoparticules magnétiques de structure coeur/coquille : propriétés magnétiques et thermodiffusion." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066568/document.

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Nos objectifs sont ici de comprendre comment les propriétés magnétiques de nanoparticules (NPs) sont affectées par la diminution de leur taille et par leur composition chimique, et comprendre ce qui régit leur mouvement thermophorétique et l'effet magnéto-calorique. Des ferrofluides composés de NPs de structure cœur-couronne sont synthétisés ici avec un cœur de ferrite de Mn, de Co ou de ferrite mixte Zn-Mn, recouvert d'une couronne de maghémite. Les mesures magnétiques révèlent une composition magnétique mixte conduisant à l'observation d'un exchange bias qui se manifeste par des cycles d'hys
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Solný, Tomáš. "Příprava a aplikace fotokatalyticky aktivního oxidu titaničitého." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2016. http://www.nusl.cz/ntk/nusl-256553.

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V práci je zkoumán vliv podmínek na průběh hydrolýzy alkoxidů titanu a vlastností připravovaných nanočástic oxidu titaničitého s důrazem na teplotu a množství vody přítomné v systému. Připravované hydrolyzáty alkoxidů titanu a nanočástice oxidu titaničitého připravené z hydrolyzátů jsou studovány metodami XRD, DTA – TGA, SEM – EDS, BET a PCCS. Nanočástice magnetitu byly syntetizovány pomocí precipitační reakce z roztoku Mohrovy soli a jejich krystalová struktura, velikost a povrchové vlastnosti byly sledovány s vyhodnocením vlivu teploty a při modifikaci povrchu polykarboxyletherovým superplas
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Ichikawa, Rodrigo Uchida. "Investigação da estrutura local e média de nanopartículas por técnicas de espalhamento e difração de raios X." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/85/85134/tde-15062018-083316/.

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Neste trabalho, a estrutura local e média de nanopartículas foi estudada utilizando-se métodos de espalhamento e difração de raios X. Os métodos utilizados foram: Análise da Função de Distribuição de Pares Atômicos (Atomic Pair Distribution Function Analysis, em inglês) para o estudo do ordenamento estrutural de curto alcance, Refinamento de Rietveld e Modelamento Total do Perfil de Difração de Pó para o estudo do ordenamento médio. Os materiais estudados foram: nanopartículas de KY3F10 dopadas com Tb, nanocubos núcleo-camada (core-shell, em inglês) de FeO-Fe3O4 e nanopartículas de ferritas de
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Li, Po-Hsing, and 李柏興. "Preparation and Electromagnetic Properties of Multilayered Core-Shell Structure of Polypyrrole/Silica-Coated Ni-Zn ferrite Nanoparticles." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/97729334576098433916.

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碩士<br>國立高雄應用科技大學<br>化學工程與材料工程系<br>98<br>Polypyrrole coated-silica/Ni-Zn ferrite(PPy/SiO2/Ni-Zn ferrite) composites were synthesized by an in-situ polymerization method, where pyrrole (Py), cetyltrimethyl ammonium brombide (CTAB), camphorsulfonic acid(CSA) and SiO2/Ni-Zn ferrite nanoparticle act as monomer, surfactant and nuclear, respectively, in which the SiO2/Ni-Zn ferrite nanoparticle was prepared by the combination of the combustion and the modified Stöber method. Results showed that the thickness of silica coating on the surface of Ni-Zn ferrites nanoparticles increased gradually with inc
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Venkatesha, N. "Nanoparticles for Bio-Imaging : Magnetic Resonance Imaging and Fluorescence Imaging." Thesis, 2015. http://etd.iisc.ernet.in/2005/3860.

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This thesis provides several nanomaterial systems that can be used as contrast agents in magnetic resonance imaging (MRI) and for optical fluorescence imaging. Nanoparticle systems described in this thesis fall under three categories: (a) graphene oxide-nanoparticle composites for MRI contrast agent application, (b) core-shell nanoparticles for MRI contrast agent application and (c) nanoparticle systems for both MRI and optical fluorescence imaging. In the case of graphene oxide based nano-composites, the following observations were made: (i) in the case of graphene oxide-Fe3O4 nanoparticle co
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Conference papers on the topic "Ferrite core-shell nanoparticles"

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Naik, P. P., R. B. Tangsali, B. Sonaye та S. Sugur. "Enrichment of magnetic alignment stimulated by γ-radiation in core-shell type nanoparticle Mn-Zn ferrite". У SOLID STATE PHYSICS: PROCEEDINGS OF THE 57TH DAE SOLID STATE PHYSICS SYMPOSIUM 2012. AIP, 2013. http://dx.doi.org/10.1063/1.4791057.

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