Equation of state and phase transformations study of Nd at ultra-high pressures

Conference · Tue Oct 01 00:00:00 EDT 1991

OSTI ID:6229639

Akella, J; Smith, G S; Weir, S ^[1]; Hu, J Z ^[2]

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1. Lawrence Livermore National Lab., CA (United States)
2. Carnegie Institution of Washington, DC (United States). Geophysical Lab.

Neodymium was investigated to 96.0 GPa pressure in a diamond-anvil ell at room temperature. The observed structural sequence as a function of pressure is dhcp-fcc- six layered'' structure. In the diffraction pattern hexagonal doublets; notably 102, 006 and 100, 108; appear as single reflection when the c/a ratio is 4.899. However, when cc/a approaches 4.7, the splitting is clear. So far in this study, no monoclinic phase or tetragonal phase were observed. 1 fig., 18 refs.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6229639
• Report Number(s): UCRL-JC-108610; CONF-9110228-5; ON: DE92002666
• Resource Relation: Conference: 13. AIRAPT international conference on high pressure science and technology, Bangalore (India), 7-11 Oct 1991
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
NEODYMIUM
CRYSTAL-PHASE TRANSFORMATIONS
EQUATIONS OF STATE
F STATES
HEXAGONAL LATTICES
VERY HIGH PRESSURE
X-RAY DIFFRACTION
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
ELEMENTS
ENERGY LEVELS
EQUATIONS
METALS
PHASE TRANSFORMATIONS
RARE EARTHS
SCATTERING
360102* - Metals & Alloys- Structure & Phase Studies