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Title: Neutron diffraction and electrical transport studies on the incommensurate magnetic phase transition in holmium at high pressures

Abstract

Neutron diffraction and electrical transport measurements have been made on the heavy rare earth metal holmium at high pressures and low temperatures in order to elucidate its transition from a paramagnetic (PM) to a helical antiferromagnetic (AFM) ordered phase as a function of pressure. The electrical resistance measurements show a change in the resistance slope as the temperature is lowered through the antiferromagnetic Neel temperature. The temperature of this antiferromagnetic transition decreases from approximately 122 K at ambient pressure at a rate of -4.9 K GPa(-1) up to a pressure of 9 GPa, whereupon the PM-to-AFM transition vanishes for higher pressures. Neutron diffraction measurements as a function of pressure at 89 and 110 K confirm the incommensurate nature of the phase transition associated with the antiferromagnetic ordering of the magnetic moments in a helical arrangement and that the ordering occurs at similar pressures as determined from the resistance results for these temperatures.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [2];  [3];  [3]
  1. University of Alabama, Birmingham
  2. Lawrence Livermore National Laboratory (LLNL)
  3. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1051471
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Journal of Physics: Condensed Matter
Additional Journal Information:
Journal Volume: 24; Journal Issue: 21; Journal ID: ISSN 0953--8984
Country of Publication:
United States
Language:
English
Subject:
Neutron Diffraction; High Pressure; Holmium metal

Citation Formats

Thomas, Sarah, Uhoya, Walter, Tsoi, Georgiy, Wenger, Lowell E, Vohra, Yogesh, Chesnut, Gary Neal, Weir, S. T., Tulk, Christopher A, and Moreira Dos Santos, Antonio F. Neutron diffraction and electrical transport studies on the incommensurate magnetic phase transition in holmium at high pressures. United States: N. p., 2012. Web. doi:10.1088/0953-8984/24/21/216003.
Thomas, Sarah, Uhoya, Walter, Tsoi, Georgiy, Wenger, Lowell E, Vohra, Yogesh, Chesnut, Gary Neal, Weir, S. T., Tulk, Christopher A, & Moreira Dos Santos, Antonio F. Neutron diffraction and electrical transport studies on the incommensurate magnetic phase transition in holmium at high pressures. United States. doi:10.1088/0953-8984/24/21/216003.
Thomas, Sarah, Uhoya, Walter, Tsoi, Georgiy, Wenger, Lowell E, Vohra, Yogesh, Chesnut, Gary Neal, Weir, S. T., Tulk, Christopher A, and Moreira Dos Santos, Antonio F. Sun . "Neutron diffraction and electrical transport studies on the incommensurate magnetic phase transition in holmium at high pressures". United States. doi:10.1088/0953-8984/24/21/216003.
@article{osti_1051471,
title = {Neutron diffraction and electrical transport studies on the incommensurate magnetic phase transition in holmium at high pressures},
author = {Thomas, Sarah and Uhoya, Walter and Tsoi, Georgiy and Wenger, Lowell E and Vohra, Yogesh and Chesnut, Gary Neal and Weir, S. T. and Tulk, Christopher A and Moreira Dos Santos, Antonio F},
abstractNote = {Neutron diffraction and electrical transport measurements have been made on the heavy rare earth metal holmium at high pressures and low temperatures in order to elucidate its transition from a paramagnetic (PM) to a helical antiferromagnetic (AFM) ordered phase as a function of pressure. The electrical resistance measurements show a change in the resistance slope as the temperature is lowered through the antiferromagnetic Neel temperature. The temperature of this antiferromagnetic transition decreases from approximately 122 K at ambient pressure at a rate of -4.9 K GPa(-1) up to a pressure of 9 GPa, whereupon the PM-to-AFM transition vanishes for higher pressures. Neutron diffraction measurements as a function of pressure at 89 and 110 K confirm the incommensurate nature of the phase transition associated with the antiferromagnetic ordering of the magnetic moments in a helical arrangement and that the ordering occurs at similar pressures as determined from the resistance results for these temperatures.},
doi = {10.1088/0953-8984/24/21/216003},
journal = {Journal of Physics: Condensed Matter},
issn = {0953--8984},
number = 21,
volume = 24,
place = {United States},
year = {2012},
month = {1}
}