Neutron diffraction and electrical transport studies on magnetic ordering in terbium at high pressures and low temperatures
Abstract
Neutron diffraction and electrical transport measurements have been carried out on the heavy rare earth metal terbium at high pressures and low temperatures in order to elucidate the onset of ferromagnetic order as a function of pressure. The electrical resistance measurements show a change in slope as the temperature is lowered through the ferromagnetic Curie temperature. The temperature of this ferromagnetic transition decreases from approximately 240 K at ambient pressure at a rate of –16.7 K/GPa up to a pressure of 3.6 GPa, at which point the onset of ferromagnetic order is suppressed. Neutron diffraction measurements as a function of pressure at temperatures ranging from 90 K to 290 K confirm that the change of slope in the resistance is associated with the ferromagnetic ordering, since this occurs at pressures similar to those determined from the resistance results at these temperatures. Furthermore, a change in ferromagnetic ordering as the pressure is increased above 3.6 GPa is correlated with the phase transition from the ambient hexagonal close packed (hcp) structure to an α-Sm type structure at high pressures.
- Authors:
-
- Univ. of Alabama at Birmingham, Birmingham, AL (United States)
- Univ. of West Georgia, Carrollton, GA (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Univ. of Alabama, Birmingham, AL (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1251157
- Grant/Contract Number:
- NA0002014
- Resource Type:
- Accepted Manuscript
- Journal Name:
- High Pressure Research
- Additional Journal Information:
- Journal Volume: 33; Journal Issue: 3; Journal ID: ISSN 0895-7959
- Publisher:
- Taylor & Francis
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; materials under extreme conditions; neutron diffraction; electrical transport; rare-earth metals; magnetism; high pressures-low temperatures
Citation Formats
Thomas, Sarah A., Montgomery, Jeffrey M., Tsoi, Georgiy M., Vohra, Yogesh K., Chesnut, Gary N., Weir, Samuel T., Tulk, Christopher A., and dos Santos, Antonio M. Neutron diffraction and electrical transport studies on magnetic ordering in terbium at high pressures and low temperatures. United States: N. p., 2013.
Web. doi:10.1080/08957959.2013.806503.
Thomas, Sarah A., Montgomery, Jeffrey M., Tsoi, Georgiy M., Vohra, Yogesh K., Chesnut, Gary N., Weir, Samuel T., Tulk, Christopher A., & dos Santos, Antonio M. Neutron diffraction and electrical transport studies on magnetic ordering in terbium at high pressures and low temperatures. United States. https://doi.org/10.1080/08957959.2013.806503
Thomas, Sarah A., Montgomery, Jeffrey M., Tsoi, Georgiy M., Vohra, Yogesh K., Chesnut, Gary N., Weir, Samuel T., Tulk, Christopher A., and dos Santos, Antonio M. Tue .
"Neutron diffraction and electrical transport studies on magnetic ordering in terbium at high pressures and low temperatures". United States. https://doi.org/10.1080/08957959.2013.806503. https://www.osti.gov/servlets/purl/1251157.
@article{osti_1251157,
title = {Neutron diffraction and electrical transport studies on magnetic ordering in terbium at high pressures and low temperatures},
author = {Thomas, Sarah A. and Montgomery, Jeffrey M. and Tsoi, Georgiy M. and Vohra, Yogesh K. and Chesnut, Gary N. and Weir, Samuel T. and Tulk, Christopher A. and dos Santos, Antonio M.},
abstractNote = {Neutron diffraction and electrical transport measurements have been carried out on the heavy rare earth metal terbium at high pressures and low temperatures in order to elucidate the onset of ferromagnetic order as a function of pressure. The electrical resistance measurements show a change in slope as the temperature is lowered through the ferromagnetic Curie temperature. The temperature of this ferromagnetic transition decreases from approximately 240 K at ambient pressure at a rate of –16.7 K/GPa up to a pressure of 3.6 GPa, at which point the onset of ferromagnetic order is suppressed. Neutron diffraction measurements as a function of pressure at temperatures ranging from 90 K to 290 K confirm that the change of slope in the resistance is associated with the ferromagnetic ordering, since this occurs at pressures similar to those determined from the resistance results at these temperatures. Furthermore, a change in ferromagnetic ordering as the pressure is increased above 3.6 GPa is correlated with the phase transition from the ambient hexagonal close packed (hcp) structure to an α-Sm type structure at high pressures.},
doi = {10.1080/08957959.2013.806503},
journal = {High Pressure Research},
number = 3,
volume = 33,
place = {United States},
year = {Tue Jun 11 00:00:00 EDT 2013},
month = {Tue Jun 11 00:00:00 EDT 2013}
}
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