Structural and magnetic phase transitions in gadolinium under high pressures and low temperatures
Abstract
High pressure structural transition studies have been carried out on rare earth metal gadolinium in a diamond anvil cell at room temperature to 169 GPa. Gadolinium has been compressed to 38% of its initial volume at this pressure. With increasing pressure, a crystal structure sequence of hcp → Sm-type → dhcp →fcc → dfcc→ monoclinic has been observed in our studies on gadolinium. The measured equation of state of gadolinium is presented to 169 GPa at ambient temperature. Magnetic ordering temperature of gadolinium has been studied using designer diamond anvils to a pressure of 25 GPa and a temperature of 10 K. The magnetic ordering temperature has been determined from the four-point electrical resistivity measurements carried out on gadolinium. Lastly, our experiments show that the magnetic transition temperature decreases with increasing pressure to 19 GPa and then increases when gadolinium is subjected to higher pressures.
- Authors:
-
- Univ. of Alabama at Birmingham, Birmingham, AL (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Publication Date:
- Research Org.:
- Univ. of Alabama, Birmingham, AL (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1251168
- Alternate Identifier(s):
- OSTI ID: 1342022
- Report Number(s):
- LLNL-JRNL-695620
Journal ID: ISSN 0895-7959
- Grant/Contract Number:
- NA0002014; AC52-07NA27344
- Resource Type:
- Accepted Manuscript
- Journal Name:
- High Pressure Research
- Additional Journal Information:
- Journal Volume: 34; Journal Issue: 4; Journal ID: ISSN 0895-7959
- Publisher:
- Taylor & Francis
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; high pressure structural transitions; magnetic ordering temperature; four-probe electrical measurements; designer diamond anvils; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Samudrala, Gopi K., Tsoi, Georgiy M., Weir, Samuel T., and Vohra, Yogesh K. Structural and magnetic phase transitions in gadolinium under high pressures and low temperatures. United States: N. p., 2014.
Web. doi:10.1080/08957959.2014.977277.
Samudrala, Gopi K., Tsoi, Georgiy M., Weir, Samuel T., & Vohra, Yogesh K. Structural and magnetic phase transitions in gadolinium under high pressures and low temperatures. United States. https://doi.org/10.1080/08957959.2014.977277
Samudrala, Gopi K., Tsoi, Georgiy M., Weir, Samuel T., and Vohra, Yogesh K. Fri .
"Structural and magnetic phase transitions in gadolinium under high pressures and low temperatures". United States. https://doi.org/10.1080/08957959.2014.977277. https://www.osti.gov/servlets/purl/1251168.
@article{osti_1251168,
title = {Structural and magnetic phase transitions in gadolinium under high pressures and low temperatures},
author = {Samudrala, Gopi K. and Tsoi, Georgiy M. and Weir, Samuel T. and Vohra, Yogesh K.},
abstractNote = {High pressure structural transition studies have been carried out on rare earth metal gadolinium in a diamond anvil cell at room temperature to 169 GPa. Gadolinium has been compressed to 38% of its initial volume at this pressure. With increasing pressure, a crystal structure sequence of hcp → Sm-type → dhcp →fcc → dfcc→ monoclinic has been observed in our studies on gadolinium. The measured equation of state of gadolinium is presented to 169 GPa at ambient temperature. Magnetic ordering temperature of gadolinium has been studied using designer diamond anvils to a pressure of 25 GPa and a temperature of 10 K. The magnetic ordering temperature has been determined from the four-point electrical resistivity measurements carried out on gadolinium. Lastly, our experiments show that the magnetic transition temperature decreases with increasing pressure to 19 GPa and then increases when gadolinium is subjected to higher pressures.},
doi = {10.1080/08957959.2014.977277},
journal = {High Pressure Research},
number = 4,
volume = 34,
place = {United States},
year = {Fri Nov 07 00:00:00 EST 2014},
month = {Fri Nov 07 00:00:00 EST 2014}
}
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Works referencing / citing this record:
Zero-Kelvin Compression Isotherms of the Elements 1 ≤ Z ≤ 92 to 100 GPa
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