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Mechanochemical Synthesis and Magnetic Characterization of Nanosized Cubic Spinel FeCr(2)S(4) Particles

[Image: see text] Nanosized samples of the cubic thiospinel FeCr(2)S(4) were synthesized by ball milling of FeS and Cr(2)S(3) precursors followed by a distinct temperature treatment between 500 and 800 °C. Depending on the applied temperature, volume weighted mean (L(vol)) particle sizes of 56 nm (5...

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Autores principales: Hansen, Anna-Lena, Kremer, Reinhard K., Heppke, Eva M., Lerch, Martin, Bensch, Wolfgang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8158788/
https://www.ncbi.nlm.nih.gov/pubmed/34056484
http://dx.doi.org/10.1021/acsomega.1c01412
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author Hansen, Anna-Lena
Kremer, Reinhard K.
Heppke, Eva M.
Lerch, Martin
Bensch, Wolfgang
author_facet Hansen, Anna-Lena
Kremer, Reinhard K.
Heppke, Eva M.
Lerch, Martin
Bensch, Wolfgang
author_sort Hansen, Anna-Lena
collection PubMed
description [Image: see text] Nanosized samples of the cubic thiospinel FeCr(2)S(4) were synthesized by ball milling of FeS and Cr(2)S(3) precursors followed by a distinct temperature treatment between 500 and 800 °C. Depending on the applied temperature, volume weighted mean (L(vol)) particle sizes of 56 nm (500 °C), 86 nm (600 °C), and 123 nm (800 °C) were obtained. All samples show a transition into the ferrimagnetic state at a Curie temperature T(C) of ∼ 167 K only slightly depending on the annealing temperature. Above T(C), ferromagnetic spin clusters survive and Curie–Weiss behavior is observed only at T ≫ T(C), with T depending on the heat treatments and the external magnetic field applied. Zero-field-cooled and field-cooled magnetic susceptibilities diverge significantly below T(C) in contrast to what is observed for conventionally solid-state-prepared polycrystalline samples. In the low-temperature region, all samples show a transition into the orbital ordered state at about 9 K, which is more pronounced for the samples heated to higher temperatures. This observation is a clear indication that the cation disorder is very low because a pronounced disorder would suppress this magnetic transition. The unusual magnetic properties of the samples at low temperatures and different external magnetic fields can be clearly related to different factors like structural microstrain and magnetocrystalline anisotropy.
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spelling pubmed-81587882021-05-28 Mechanochemical Synthesis and Magnetic Characterization of Nanosized Cubic Spinel FeCr(2)S(4) Particles Hansen, Anna-Lena Kremer, Reinhard K. Heppke, Eva M. Lerch, Martin Bensch, Wolfgang ACS Omega [Image: see text] Nanosized samples of the cubic thiospinel FeCr(2)S(4) were synthesized by ball milling of FeS and Cr(2)S(3) precursors followed by a distinct temperature treatment between 500 and 800 °C. Depending on the applied temperature, volume weighted mean (L(vol)) particle sizes of 56 nm (500 °C), 86 nm (600 °C), and 123 nm (800 °C) were obtained. All samples show a transition into the ferrimagnetic state at a Curie temperature T(C) of ∼ 167 K only slightly depending on the annealing temperature. Above T(C), ferromagnetic spin clusters survive and Curie–Weiss behavior is observed only at T ≫ T(C), with T depending on the heat treatments and the external magnetic field applied. Zero-field-cooled and field-cooled magnetic susceptibilities diverge significantly below T(C) in contrast to what is observed for conventionally solid-state-prepared polycrystalline samples. In the low-temperature region, all samples show a transition into the orbital ordered state at about 9 K, which is more pronounced for the samples heated to higher temperatures. This observation is a clear indication that the cation disorder is very low because a pronounced disorder would suppress this magnetic transition. The unusual magnetic properties of the samples at low temperatures and different external magnetic fields can be clearly related to different factors like structural microstrain and magnetocrystalline anisotropy. American Chemical Society 2021-05-10 /pmc/articles/PMC8158788/ /pubmed/34056484 http://dx.doi.org/10.1021/acsomega.1c01412 Text en © 2021 The Authors. Published by American Chemical Society Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Hansen, Anna-Lena
Kremer, Reinhard K.
Heppke, Eva M.
Lerch, Martin
Bensch, Wolfgang
Mechanochemical Synthesis and Magnetic Characterization of Nanosized Cubic Spinel FeCr(2)S(4) Particles
title Mechanochemical Synthesis and Magnetic Characterization of Nanosized Cubic Spinel FeCr(2)S(4) Particles
title_full Mechanochemical Synthesis and Magnetic Characterization of Nanosized Cubic Spinel FeCr(2)S(4) Particles
title_fullStr Mechanochemical Synthesis and Magnetic Characterization of Nanosized Cubic Spinel FeCr(2)S(4) Particles
title_full_unstemmed Mechanochemical Synthesis and Magnetic Characterization of Nanosized Cubic Spinel FeCr(2)S(4) Particles
title_short Mechanochemical Synthesis and Magnetic Characterization of Nanosized Cubic Spinel FeCr(2)S(4) Particles
title_sort mechanochemical synthesis and magnetic characterization of nanosized cubic spinel fecr(2)s(4) particles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8158788/
https://www.ncbi.nlm.nih.gov/pubmed/34056484
http://dx.doi.org/10.1021/acsomega.1c01412
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