Image Plate X-Ray Diffraction Study of Distorted FCC Phase in Rare Earth Metals at High Pressures

1997 ◽  
Vol 499 ◽  
Author(s):  
Steven Beaver ◽  
Gary N. Chesnut ◽  
Yogesh K. Vohra

ABSTRACTA high-pressure phase of gadolinium is completely described for the first time. This phase, HR24, is found to exist at 46 GPa. The structure is examined for evidence of delocalization of the f shell, and the evolution of the HR24 phase with increasing pressure is discussed.

Pramana ◽  
1986 ◽  
Vol 27 (6) ◽  
pp. 835-839 ◽  
Author(s):  
Hema Sankaran ◽  
Surinder M Sharma ◽  
S K Sikka ◽  
R Chidambaram

Author(s):  
Innokenty Kantor ◽  
Alexander Kurnosov ◽  
Catherine McCammon ◽  
Leonid Dubrovinsky

AbstractA high-pressure quasi-single crystal X-ray diffraction study of a synthetic iron oxide Fe


2019 ◽  
Vol 36 (4) ◽  
pp. 046103 ◽  
Author(s):  
Sheng Jiang ◽  
Jing Liu ◽  
Xiao-Dong Li ◽  
Yan-Chun Li ◽  
Shang-Ming He ◽  
...  

2017 ◽  
Vol 102 (3) ◽  
pp. 666-673 ◽  
Author(s):  
Anna Pakhomova ◽  
Leyla Ismailova ◽  
Elena Bykova ◽  
Maxim Bykov ◽  
Tiziana Boffa Ballaran ◽  
...  

1992 ◽  
Vol 25 (5) ◽  
pp. 578-581 ◽  
Author(s):  
L. Gerward ◽  
J. S. Olsen ◽  
S. Steenstrup ◽  
M. Malinowski ◽  
S. Åsbrink ◽  
...  

Synchrotron-radiation X-ray diffraction studies of CaF2 at high pressures have been performed on a powder sample up to 45 GPa and on a single-crystal sample up to 9.4 GPa. The bulk modulus of the low-pressure phase was determined to be B 0 = 87 (5) GPa. A phase transition was observed at about 9.5 GPa. The transition is accompanied by a volume contraction of 11%. The high-pressure phase is orthorhombic PbCl2 type (space group Pbnm). The sample only partially reverts to the low-pressure phase upon release of pressure.


2019 ◽  
Vol 31 (23) ◽  
pp. 235401 ◽  
Author(s):  
T Marqueño ◽  
V Monteseguro ◽  
F Cova ◽  
D Errandonea ◽  
D Santamaria-Perez ◽  
...  

2013 ◽  
Vol 41 (2) ◽  
pp. 85-90
Author(s):  
Dawei Fan ◽  
Shuyi Wei ◽  
Maining Ma ◽  
Zhiqiang Chen ◽  
Baosheng Li ◽  
...  

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