NDLI: A Study on the Magnetic Properties of Al-Doped Sulphur Spinel

Content Provider	IEEE Xplore Digital Library
Author	Chin Mo Kim Sam Jin Kim Chul Sung Kim
Copyright Year	1965
Abstract	FeCr_2-xAl_xS₄ ( x=0.1, 0.3, and 0.5) samples were prepared by solid state reaction method. The crystallographic structure and magnetic properties of the fabricated compounds were investigated by X-ray diffraction (XRD), superconducting quantum interference device (SQUID) magnetometer, and Mo¿ssbauer spectroscopy. The crystal structure is determined to be a cubic spinel with the space group of Fd-3m and the lattice constants a ₀= 9.998, 10.004, and 10.010 A¿ , respectively. The temperature dependence of magnetization, measured from 5 to 300 K, suggests that FeCr_2-xAl_xS₄ (x=0.1, 0.3, and 0.5) samples show ferrimagnetic behavior. The decrease of Ne¿el temperature compared with FeCr₂S₄ could be interpreted by weakening of the exchange interaction by substitution of nonmagnetic Al ions. Mo¿ssbauer spectra of FeCr_2-xAl_xS₄ ( x= 0.1, 0.3, and 0.5) were obtained at various temperatures ranging from 4.2 to 300 K. Isomer shift values of the samples at various temperatures for FeCr_2-xAl_xS₄ (x=0.1 , 0.3, and 0.5) were 0.50 ¿ ¿ ¿ 0.73 mm/s, relative to the Fe metal, which are consistent with the Fe²⁺ valence state.
Sponsorship	IEEE Magnetics Society
Starting Page	251
Ending Page	253
Page Count	3
File Size	301012
File Format	PDF
ISSN	00189464
Volume Number	46
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic properties SQUIDs Temperature distribution Iron Solid state circuits Crystallography X-ray diffraction X-ray scattering Superconducting devices Superconducting materials sulphur spinel Chalcogenide spinel ferrimagnetic MÖssbauer
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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