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Title: Magnetic and structural properties of SmCo{sub 7-x}Cu{sub x} alloys

Abstract

We report the structural and magnetic properties of SmCo{sub 7-x}Cu{sub x}, where x=0, 0.1, 0.2, 0.3, 0.4, 0.5, and 0.7. X-ray diffraction shows that these alloys from the disordered hexagonal TbCu{sub 7}-type structure. For large values of x(x{>=}0.8) the hexagonal TbCu{sub 7}-type structure cannot be formed. X-ray diffraction on magnetically aligned samples show that these samples have uniaxial anisotropy. The lattice parameters (a and c) are dependent on the Cu concentration, and the unit cell volume is found to increase with x. The saturation magnetization decreases with x at both room temperature and 25 K. The Curie temperature increases with x for small values of x while it decreases with x for large values of x. A maximum value of T{sub C}=852 degree sign C is found in these alloys. (c) 2000 American Institute of Physics.

Authors:
 [1];  [2];  [1];  [1]
  1. Behlen Laboratory of Physics and Center for Materials Research and Analysis, University of Nebraska, Lincoln, Nebraska 68588-0111 (United States)
  2. Institute of Superconductivity and Department of Physics, Bar-Ilan University, Ramat Gan 52900, (Israel)
Publication Date:
OSTI Identifier:
20216278
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 87; Journal Issue: 9; Other Information: PBD: 1 May 2000; Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; SAMARIUM ALLOYS; COBALT ALLOYS; COPPER ALLOYS; CRYSTAL STRUCTURE; X-RAY DIFFRACTION; LATTICE PARAMETERS; ORDER-DISORDER TRANSFORMATIONS; MAGNETIZATION; TEMPERATURE DEPENDENCE; CURIE POINT; EXPERIMENTAL DATA

Citation Formats

Al-Omari, I. A., Yeshurun, Y., Zhou, J., and Sellmyer, D. J. Magnetic and structural properties of SmCo{sub 7-x}Cu{sub x} alloys. United States: N. p., 2000. Web. doi:10.1063/1.372816.
Al-Omari, I. A., Yeshurun, Y., Zhou, J., & Sellmyer, D. J. Magnetic and structural properties of SmCo{sub 7-x}Cu{sub x} alloys. United States. doi:10.1063/1.372816.
Al-Omari, I. A., Yeshurun, Y., Zhou, J., and Sellmyer, D. J. Mon . "Magnetic and structural properties of SmCo{sub 7-x}Cu{sub x} alloys". United States. doi:10.1063/1.372816.
@article{osti_20216278,
title = {Magnetic and structural properties of SmCo{sub 7-x}Cu{sub x} alloys},
author = {Al-Omari, I. A. and Yeshurun, Y. and Zhou, J. and Sellmyer, D. J.},
abstractNote = {We report the structural and magnetic properties of SmCo{sub 7-x}Cu{sub x}, where x=0, 0.1, 0.2, 0.3, 0.4, 0.5, and 0.7. X-ray diffraction shows that these alloys from the disordered hexagonal TbCu{sub 7}-type structure. For large values of x(x{>=}0.8) the hexagonal TbCu{sub 7}-type structure cannot be formed. X-ray diffraction on magnetically aligned samples show that these samples have uniaxial anisotropy. The lattice parameters (a and c) are dependent on the Cu concentration, and the unit cell volume is found to increase with x. The saturation magnetization decreases with x at both room temperature and 25 K. The Curie temperature increases with x for small values of x while it decreases with x for large values of x. A maximum value of T{sub C}=852 degree sign C is found in these alloys. (c) 2000 American Institute of Physics.},
doi = {10.1063/1.372816},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 9,
volume = 87,
place = {United States},
year = {2000},
month = {5}
}