Cation distributions estimated using the magnetic moments of the spinel ferrites Co1-xCrxFe2O4 at 10 K

doi:10.1088/1674-1056/23/10/107503

›› 2014, Vol. 23 ›› Issue (10): 107503-107503.doi: 10.1088/1674-1056/23/10/107503

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Cation distributions estimated using the magnetic moments of the spinel ferrites Co_1-xCr_xFe₂O₄ at 10 K

尚志丰^a, 齐伟华^a, 纪登辉^{a b}, 徐静^a, 唐贵德^a, 张晓云^a, 李壮志^a, 郎莉莉^a

a Hebei Advanced Thin Film Laboratory, Department of Physics, Hebei Normal University, Shijiazhuang 050024, China;
b Department of Physics and Electronic Science, Liupanshui Normal University, Liupanshui 553004, China

收稿日期:2014-01-14 修回日期:2014-04-14 出版日期:2014-10-15 发布日期:2014-10-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. NSF-11174069), the Natural Science Foundation of Hebei Province, China (Grant No. E2011205083), the Key Item Science Foundation of the Education Department of Hebei Province, China (Grant No. ZD2010129), and the Young Scholar Science Foundation of the Education Department of Hebei Province, China (Grant No. QN20131008).

Cation distributions estimated using the magnetic moments of the spinel ferrites Co_1-xCr_xFe₂O₄ at 10 K

Shang Zhi-Feng (尚志丰)^a, Qi Wei-Hua (齐伟华)^a, Ji Deng-Hui (纪登辉)^{a b}, Xu Jing (徐静)^a, Tang Gui-De (唐贵德)^a, Zhang Xiao-Yun (张晓云)^a, Li Zhuang-Zhi (李壮志)^a, Lang Li-Li (郎莉莉)^a

a Hebei Advanced Thin Film Laboratory, Department of Physics, Hebei Normal University, Shijiazhuang 050024, China;
b Department of Physics and Electronic Science, Liupanshui Normal University, Liupanshui 553004, China

Received:2014-01-14 Revised:2014-04-14 Online:2014-10-15 Published:2014-10-15
Contact: Tang Gui-De E-mail:tanggd@mail.hebtu.edu.cn
About author:75.75.-c; 81.40.Rs
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. NSF-11174069), the Natural Science Foundation of Hebei Province, China (Grant No. E2011205083), the Key Item Science Foundation of the Education Department of Hebei Province, China (Grant No. ZD2010129), and the Young Scholar Science Foundation of the Education Department of Hebei Province, China (Grant No. QN20131008).

摘要/Abstract

摘要： (A)[B]₂O₄ ferrite samples with the composition Co_1-xCr_xFe₂O₄ (0.0 ≤ x ≤ 1.0) are prepared using a hydrothermal method, and subjected to calcining in a tube furnace with an argon-flow at 1673 K for 2 h. X-ray diffraction patterns indicate that each of all the samples has a single phase cubic spinel structure with a space group of Fd3 m. Magnetic measurements show that the saturation magnetization decreases with as the Cr content x increases. The cation distribution of the samples is estimated by fitting the dependence of the magnetic moments on x at 10 K, using the quantum mechanical model previously proposed by our group. The calculated sum of the content values of the Cr³⁺ and Cr²⁺ cations occupying the (A) sites increases as the value of x increases. In the fitting process, the magnetic moment directions of the Cr³⁺ and Cr²⁺ cations are assumed to be antiparallel to those of the Fe and Co cations, respectively, which is in accordance with Hund's rules.

关键词: spinel ferrite, magnetic property, cation distribution, ionicity

Abstract: (A)[B]₂O₄ ferrite samples with the composition Co_1-xCr_xFe₂O₄ (0.0 ≤ x ≤ 1.0) are prepared using a hydrothermal method, and subjected to calcining in a tube furnace with an argon-flow at 1673 K for 2 h. X-ray diffraction patterns indicate that each of all the samples has a single phase cubic spinel structure with a space group of Fd3 m. Magnetic measurements show that the saturation magnetization decreases with as the Cr content x increases. The cation distribution of the samples is estimated by fitting the dependence of the magnetic moments on x at 10 K, using the quantum mechanical model previously proposed by our group. The calculated sum of the content values of the Cr³⁺ and Cr²⁺ cations occupying the (A) sites increases as the value of x increases. In the fitting process, the magnetic moment directions of the Cr³⁺ and Cr²⁺ cations are assumed to be antiparallel to those of the Fe and Co cations, respectively, which is in accordance with Hund's rules.

Key words: spinel ferrite, magnetic property, cation distribution, ionicity

中图分类号: (Magnetic properties of nanostructures)

75.75.-c

81.40.Rs (Electrical and magnetic properties related to treatment conditions)

尚志丰, 齐伟华, 纪登辉, 徐静, 唐贵德, 张晓云, 李壮志, 郎莉莉. Cation distributions estimated using the magnetic moments of the spinel ferrites Co_1-xCr_xFe₂O₄ at 10 K[J]. , 2014, 23(10): 107503-107503.

Shang Zhi-Feng (尚志丰), Qi Wei-Hua (齐伟华), Ji Deng-Hui (纪登辉), Xu Jing (徐静), Tang Gui-De (唐贵德), Zhang Xiao-Yun (张晓云), Li Zhuang-Zhi (李壮志), Lang Li-Li (郎莉莉). Cation distributions estimated using the magnetic moments of the spinel ferrites Co_1-xCr_xFe₂O₄ at 10 K[J]. Chin. Phys. B, 2014, 23(10): 107503-107503.

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Cation distributions estimated using the magnetic moments of the spinel ferrites Co_1-xCr_xFe₂O₄ at 10 K

Cation distributions estimated using the magnetic moments of the spinel ferrites Co_1-xCr_xFe₂O₄ at 10 K

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