Structural and magnetic phase transitions in gadolinium under high pressures and low temperatures [electronic resource]
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-ty...
Saved in:
| Online Access: |
Online Access (via OSTI) |
|---|---|
| Corporate Author: | |
| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Department of Energy. ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2014.
|
| Subjects: |
| Summary: | 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. High Pressure Structural Transitions; Magnetic Ordering Temperature; Four-Probe Electrical Measurements; Designer Diamond Anvils. |
|---|---|
| Item Description: | Published through SciTech Connect. 11/07/2014. "llnl-jrnl--695620" High Pressure Research 34 4 ISSN 0895-7959 AM. Gopi K. Samudrala; Georgiy M. Tsoi; Samuel T. Weir; Yogesh K. Vohra. |
| Physical Description: | p. 385-391 : digital, PDF file. |