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Title: New Magnetic confirguration in paramagnetic phase of HoCo2

Abstract

X-ray magnetic circular dichroism (XMCD) measurements on HoCo2 reveal the inversion of Co moment at temperatures higher than the critical temperature, Tc, showing that the net magnetization under a field of the Ho and Co sublattices remain antiparallel even above Tc. The Ho moment also changes its orientation to align antiparallel to the applied field at high temperature giving rise to a new magnetic configuration in the paramagnetic regime. Transverse susceptibility (TS) and small angle neutron scattering (SANS) measurements performed above Tc indicate the existence of sizable magnetic short-range correlated regions in HoCo2. First principles calculations based on spin polarized local-density approximation, LSDA+U havebeen performed to obtain insights on the origin of the short-range correlated volume.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Ames Lab., Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1045775
Report Number(s):
IS-J 7695
Journal ID: 0021-8979
DOE Contract Number:  
DE-AC02-07CH11358
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 111
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Bonilla, C M, Calvo, I, Herrero-Albillos, J, Figueroa, A I, Castan-Guerrero, C, Bertolome, J, Rodriguez-Velamazan, J A, Schmitz, D, Weschke, E, Paudyal, Durga, Pecharsky, Vitalij, Gschneidner, Jr, Karl, Bartolome, F, and Garcia, D. New Magnetic confirguration in paramagnetic phase of HoCo2. United States: N. p., 2012. Web. doi:10.1063/1.3672258.
Bonilla, C M, Calvo, I, Herrero-Albillos, J, Figueroa, A I, Castan-Guerrero, C, Bertolome, J, Rodriguez-Velamazan, J A, Schmitz, D, Weschke, E, Paudyal, Durga, Pecharsky, Vitalij, Gschneidner, Jr, Karl, Bartolome, F, & Garcia, D. New Magnetic confirguration in paramagnetic phase of HoCo2. United States. https://doi.org/10.1063/1.3672258
Bonilla, C M, Calvo, I, Herrero-Albillos, J, Figueroa, A I, Castan-Guerrero, C, Bertolome, J, Rodriguez-Velamazan, J A, Schmitz, D, Weschke, E, Paudyal, Durga, Pecharsky, Vitalij, Gschneidner, Jr, Karl, Bartolome, F, and Garcia, D. 2012. "New Magnetic confirguration in paramagnetic phase of HoCo2". United States. https://doi.org/10.1063/1.3672258.
@article{osti_1045775,
title = {New Magnetic confirguration in paramagnetic phase of HoCo2},
author = {Bonilla, C M and Calvo, I and Herrero-Albillos, J and Figueroa, A I and Castan-Guerrero, C and Bertolome, J and Rodriguez-Velamazan, J A and Schmitz, D and Weschke, E and Paudyal, Durga and Pecharsky, Vitalij and Gschneidner, Jr, Karl and Bartolome, F and Garcia, D},
abstractNote = {X-ray magnetic circular dichroism (XMCD) measurements on HoCo2 reveal the inversion of Co moment at temperatures higher than the critical temperature, Tc, showing that the net magnetization under a field of the Ho and Co sublattices remain antiparallel even above Tc. The Ho moment also changes its orientation to align antiparallel to the applied field at high temperature giving rise to a new magnetic configuration in the paramagnetic regime. Transverse susceptibility (TS) and small angle neutron scattering (SANS) measurements performed above Tc indicate the existence of sizable magnetic short-range correlated regions in HoCo2. First principles calculations based on spin polarized local-density approximation, LSDA+U havebeen performed to obtain insights on the origin of the short-range correlated volume.},
doi = {10.1063/1.3672258},
url = {https://www.osti.gov/biblio/1045775}, journal = {Journal of Applied Physics},
number = ,
volume = 111,
place = {United States},
year = {Thu Feb 23 00:00:00 EST 2012},
month = {Thu Feb 23 00:00:00 EST 2012}
}