›› 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 Co1-xCrxFe2O4 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   

  1. 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 Co1-xCrxFe2O4 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   

  1. 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: (A)[B]2O4 ferrite samples with the composition Co1-xCrxFe2O4 (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 Co1-xCrxFe2O4 (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)