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Title: Muon spin relaxation in ErRh/sub 4/B/sub 4/

Abstract

We have found that the erbium magnetic moment is so large that in ErRh/sub 4/B/sub 4/ it can relax muon polarization in times shorter than can be resolved by a typical ..mu..SR apparatus. The complete relaxation signal is resolved at temperatures above 50K only because of rapid fluctuation of the erbium moment, which partially decouples it from the muon's moment. Not much signal is resolved at temperatures less than or equal to 10K, but no dramatic effect is seen in crossing the superconducting transition temperature. The higher temperature local field fluctuation rates observed appear consistent with the exchange and spin-lattice fluctuation rates to be expected of erbium in this material. Perhaps more information on moment dynamics below 10K can be obtained by alloying erbium with a nonmagnetic rare earth such as yttrium within the RERh/sub 4/B/sub 4/ structure (as has been attempted for holmium), to reduce the rms local field at the muon.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States); British Columbia Univ., Vancouver (Canada); California Univ., San Diego, La Jolla (USA). Dept. of Physics
OSTI Identifier:
6449542
Report Number(s):
LA-UR-84-3159; CONF-841184-3
ON: DE85002202
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: Magnetism and magnetic materials conference and exhibit, San Diego, CA, USA, 27 Nov 1984
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ERBIUM BORIDES; MUONS; RELAXATION; RHODIUM BORIDES; SPIN; ANGULAR MOMENTUM; BORIDES; BORON COMPOUNDS; ELEMENTARY PARTICLES; ERBIUM COMPOUNDS; FERMIONS; LEPTONS; PARTICLE PROPERTIES; RARE EARTH COMPOUNDS; REFRACTORY METAL COMPOUNDS; RHODIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; 360204* - Ceramics, Cermets, & Refractories- Physical Properties

Citation Formats

Noakes, D R, Ansaldo, E J, Brewer, J H, Harshman, D R, Huang, C Y, Torikachili, M S, Lambert, S E, and Maple, M B. Muon spin relaxation in ErRh/sub 4/B/sub 4/. United States: N. p., 1984. Web.
Noakes, D R, Ansaldo, E J, Brewer, J H, Harshman, D R, Huang, C Y, Torikachili, M S, Lambert, S E, & Maple, M B. Muon spin relaxation in ErRh/sub 4/B/sub 4/. United States.
Noakes, D R, Ansaldo, E J, Brewer, J H, Harshman, D R, Huang, C Y, Torikachili, M S, Lambert, S E, and Maple, M B. 1984. "Muon spin relaxation in ErRh/sub 4/B/sub 4/". United States. https://www.osti.gov/servlets/purl/6449542.
@article{osti_6449542,
title = {Muon spin relaxation in ErRh/sub 4/B/sub 4/},
author = {Noakes, D R and Ansaldo, E J and Brewer, J H and Harshman, D R and Huang, C Y and Torikachili, M S and Lambert, S E and Maple, M B},
abstractNote = {We have found that the erbium magnetic moment is so large that in ErRh/sub 4/B/sub 4/ it can relax muon polarization in times shorter than can be resolved by a typical ..mu..SR apparatus. The complete relaxation signal is resolved at temperatures above 50K only because of rapid fluctuation of the erbium moment, which partially decouples it from the muon's moment. Not much signal is resolved at temperatures less than or equal to 10K, but no dramatic effect is seen in crossing the superconducting transition temperature. The higher temperature local field fluctuation rates observed appear consistent with the exchange and spin-lattice fluctuation rates to be expected of erbium in this material. Perhaps more information on moment dynamics below 10K can be obtained by alloying erbium with a nonmagnetic rare earth such as yttrium within the RERh/sub 4/B/sub 4/ structure (as has been attempted for holmium), to reduce the rms local field at the muon.},
doi = {},
url = {https://www.osti.gov/biblio/6449542}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1984},
month = {Sun Jan 01 00:00:00 EST 1984}
}

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