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Emergent magnetic properties of biphase iron oxide nanorods

We report on the magnetic properties of biphase iron oxide nanorods (NRs) consisting of ferrimagnetic Fe3O4 and antiferromagnetic α-Fe2O3 phases. Annealing as-prepared NRs at 250 °C for 5h, significantly improved the crystallinity of the Fe3O4 phase and enhanced the volume fraction of the α-Fe2O3 ph...

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Tác giả chính: S. B. Attanayake, A. Chanda, R. Das, M. H. Phan, H. Srikanth
Định dạng: Bài trích
Ngôn ngữ:English
Nhà xuất bản: AIP Publishing LLC 2022
Chủ đề:
Magnetic properties
Iron oxide nanorods
Truy cập trực tuyến:https://aip.scitation.org/doi/10.1063/9.0000256
https://dlib.phenikaa-uni.edu.vn/handle/PNK/5957
https://doi.org/10.1063/9.0000256
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spelling oai:localhost:PNK-59572022-08-17T05:54:51Z Emergent magnetic properties of biphase iron oxide nanorods S. B. Attanayake A. Chanda R. Das M. H. Phan H. Srikanth Magnetic properties Iron oxide nanorods We report on the magnetic properties of biphase iron oxide nanorods (NRs) consisting of ferrimagnetic Fe3O4 and antiferromagnetic α-Fe2O3 phases. Annealing as-prepared NRs at 250 °C for 5h, significantly improved the crystallinity of the Fe3O4 phase and enhanced the volume fraction of the α-Fe2O3 phase. Magnetometry data consistently reveal these two magnetically distinct phases, which are not in proximity to each other but separated by a region of disordered spins giving rise to enhanced magnetization at low temperatures when the sample was cooled down from 300 K in the presence of a 1T field to 10 K. This phenomenon which is also known as the pinning effect is much more pronounced in the annealed sample, resulting from the increased volume fraction of the α-Fe2O3 phase which could strengthen the interfacial spin frustration between these two phases and enhance the density of disordered spins at the interface 2022-07-13T02:00:05Z 2022-07-13T02:00:05Z 2022 Bài trích https://aip.scitation.org/doi/10.1063/9.0000256 https://dlib.phenikaa-uni.edu.vn/handle/PNK/5957 https://doi.org/10.1063/9.0000256 en AIP Publishing LLC
institution Digital Phenikaa
collection Digital Phenikaa
language English
topic Magnetic properties
Iron oxide nanorods
spellingShingle Magnetic properties
Iron oxide nanorods
S. B. Attanayake
A. Chanda
R. Das
M. H. Phan
H. Srikanth
Emergent magnetic properties of biphase iron oxide nanorods
description We report on the magnetic properties of biphase iron oxide nanorods (NRs) consisting of ferrimagnetic Fe3O4 and antiferromagnetic α-Fe2O3 phases. Annealing as-prepared NRs at 250 °C for 5h, significantly improved the crystallinity of the Fe3O4 phase and enhanced the volume fraction of the α-Fe2O3 phase. Magnetometry data consistently reveal these two magnetically distinct phases, which are not in proximity to each other but separated by a region of disordered spins giving rise to enhanced magnetization at low temperatures when the sample was cooled down from 300 K in the presence of a 1T field to 10 K. This phenomenon which is also known as the pinning effect is much more pronounced in the annealed sample, resulting from the increased volume fraction of the α-Fe2O3 phase which could strengthen the interfacial spin frustration between these two phases and enhance the density of disordered spins at the interface
format Bài trích
author S. B. Attanayake
A. Chanda
R. Das
M. H. Phan
H. Srikanth
author_facet S. B. Attanayake
A. Chanda
R. Das
M. H. Phan
H. Srikanth
author_sort S. B. Attanayake
title Emergent magnetic properties of biphase iron oxide nanorods
title_short Emergent magnetic properties of biphase iron oxide nanorods
title_full Emergent magnetic properties of biphase iron oxide nanorods
title_fullStr Emergent magnetic properties of biphase iron oxide nanorods
title_full_unstemmed Emergent magnetic properties of biphase iron oxide nanorods
title_sort emergent magnetic properties of biphase iron oxide nanorods
publisher AIP Publishing LLC
publishDate 2022
url https://aip.scitation.org/doi/10.1063/9.0000256
https://dlib.phenikaa-uni.edu.vn/handle/PNK/5957
https://doi.org/10.1063/9.0000256
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score 8.891053

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