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Title: Magnetic hyperfine structure in amorphous DyFe$sub 2$

Abstract

Results are summarized of a Moessbauer study of the amorphous rare earth- -transition metal alloy DyFe$sub 2$ in the magnetically ordered state. Both the $sup 57$Fe and $sup 161$Dy spectra were investigated as a function of temperature and reveal a broad, though measurable, distribution of Fe hyperfine fields (H/sub eff/) and quadrupole splittings (QS). There is a distribution similar in magnitude for the Dy hyperfine fields but the observed quadrupole splittings are narrowly distributed. The temperature variation of the $sup 161$Dy spectra indicates a large variation of local exchange splittings at the Dy sites. These results are discussed in terms of a model in which the Dy spins are more strongly coupled to their random-direction anisotropy axes than to the neighboring Fe spins (which also experience a weaker random-direction anisotropy.) (auth)

Authors:
; ; ;
Publication Date:
Research Org.:
Naval Research Lab., Washington, DC
OSTI Identifier:
4151541
NSA Number:
NSA-33-003567
Resource Type:
Conference
Journal Name:
AIP (Am. Inst. Phys.) Conf. Proc., no. 24, pp. 115-116
Additional Journal Information:
Conference: 20. annual conference on magnetism and magnetic materials, San Francisco, California, USA, 3 Dec 1974; Other Information: See CONF-741202--. Orig. Receipt Date: 30-JUN-76
Country of Publication:
United States
Language:
English
Subject:
N50230* -Metals, Ceramics, & Other Materials-Metals & Alloys-Properties, Structure & Phase Studies; 360104* -Materials-Metals & Alloys-Physical Properties; *DYSPROSIUM 161- MOESSBAUER EFFECT; *DYSPROSIUM ALLOYS- MAGNETIC PROPERTIES; *IRON 57- MOESSBAUER EFFECT; *IRON ALLOYS- MAGNETIC PROPERTIES; AMORPHOUS STATE; HYPERFINE STRUCTURE; INTERMETALLIC COMPOUNDS; TEMPERATURE DEPENDENCE

Citation Formats

Forester, D W, Abbundi, R, Segnan, R, and Sweger, D. Magnetic hyperfine structure in amorphous DyFe$sub 2$. United States: N. p., 1975. Web.
Forester, D W, Abbundi, R, Segnan, R, & Sweger, D. Magnetic hyperfine structure in amorphous DyFe$sub 2$. United States.
Forester, D W, Abbundi, R, Segnan, R, and Sweger, D. 1975. "Magnetic hyperfine structure in amorphous DyFe$sub 2$". United States.
@article{osti_4151541,
title = {Magnetic hyperfine structure in amorphous DyFe$sub 2$},
author = {Forester, D W and Abbundi, R and Segnan, R and Sweger, D},
abstractNote = {Results are summarized of a Moessbauer study of the amorphous rare earth- -transition metal alloy DyFe$sub 2$ in the magnetically ordered state. Both the $sup 57$Fe and $sup 161$Dy spectra were investigated as a function of temperature and reveal a broad, though measurable, distribution of Fe hyperfine fields (H/sub eff/) and quadrupole splittings (QS). There is a distribution similar in magnitude for the Dy hyperfine fields but the observed quadrupole splittings are narrowly distributed. The temperature variation of the $sup 161$Dy spectra indicates a large variation of local exchange splittings at the Dy sites. These results are discussed in terms of a model in which the Dy spins are more strongly coupled to their random-direction anisotropy axes than to the neighboring Fe spins (which also experience a weaker random-direction anisotropy.) (auth)},
doi = {},
url = {https://www.osti.gov/biblio/4151541}, journal = {AIP (Am. Inst. Phys.) Conf. Proc., no. 24, pp. 115-116},
number = ,
volume = ,
place = {United States},
year = {1975},
month = {1}
}

Conference:
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