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Title: Study of Al impurity induced magnetic instability in CeFe{sub 2}

Abstract

We report experimental and computational studies on Al impurity induced magnetic instabilities in CeFe{sub 2}. The work is based on the reported first order magneto-structural phase transition in Ce(Fe{sub 1-x}Al{sub x}){sub 2}, with 0.02 ≤ x ≤ 0.08, below 90 K. We performed first-principles calculations of electronic and magnetic properties of Ce(Fe{sub 1-x}Al{sub x}){sub 2} for x = 0.031 and 0.25. A concentration dependence of Fe and Ce moments is observed, while the Al impurity does not carry any appreciable moment in either case. We investigated spin-polarised partial density of states of Ce(Fe{sub 1-x}Al{sub x}){sub 2} and their various hybridizations in order to find an answer for an antiferromagnetic kind of order at low temperatures.

Authors:
;  [1]
  1. Department of Physics, Indian Institute of Technology Kharagpur 721302 (India)
Publication Date:
OSTI Identifier:
22391703
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1661; Journal Issue: 1; Conference: ICCMP 2014: International Conference on Condensed Matter Physics 2014, Shimla (India), 4-6 Nov 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALUMINIUM; ANTIFERROMAGNETISM; CERIUM; CONCENTRATION RATIO; DENSITY OF STATES; INSTABILITY; INTERMETALLIC COMPOUNDS; IRON; MAGNETIC PROPERTIES; PHASE TRANSFORMATIONS; SPIN; TEMPERATURE DEPENDENCE

Citation Formats

Das, Rakesh, and Srivastava, S. K. Study of Al impurity induced magnetic instability in CeFe{sub 2}. United States: N. p., 2015. Web. doi:10.1063/1.4915380.
Das, Rakesh, & Srivastava, S. K. Study of Al impurity induced magnetic instability in CeFe{sub 2}. United States. doi:10.1063/1.4915380.
Das, Rakesh, and Srivastava, S. K. Fri . "Study of Al impurity induced magnetic instability in CeFe{sub 2}". United States. doi:10.1063/1.4915380.
@article{osti_22391703,
title = {Study of Al impurity induced magnetic instability in CeFe{sub 2}},
author = {Das, Rakesh and Srivastava, S. K.},
abstractNote = {We report experimental and computational studies on Al impurity induced magnetic instabilities in CeFe{sub 2}. The work is based on the reported first order magneto-structural phase transition in Ce(Fe{sub 1-x}Al{sub x}){sub 2}, with 0.02 ≤ x ≤ 0.08, below 90 K. We performed first-principles calculations of electronic and magnetic properties of Ce(Fe{sub 1-x}Al{sub x}){sub 2} for x = 0.031 and 0.25. A concentration dependence of Fe and Ce moments is observed, while the Al impurity does not carry any appreciable moment in either case. We investigated spin-polarised partial density of states of Ce(Fe{sub 1-x}Al{sub x}){sub 2} and their various hybridizations in order to find an answer for an antiferromagnetic kind of order at low temperatures.},
doi = {10.1063/1.4915380},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1661,
place = {United States},
year = {2015},
month = {5}
}