Isosymmetric structural phase transition of the orthorhombic lanthanum gallate structure as a function of temperature determined by Rietveld analysis

CrystEngComm ◽  
2018 ◽  
Vol 20 (37) ◽  
pp. 5562-5569
Author(s):  
Y. Q. Tang ◽  
C. López-Cartes ◽  
M. A. Avilés ◽  
J. M. Córdoba
Keyword(s):  
Phase Transition ◽  
Ball Milling ◽  
Structural Phase Transition ◽  
Structural Phase ◽  
Rietveld Analysis ◽  
High Energy ◽  
Lanthanum Gallate ◽  
Air Atmosphere ◽  
Planetary Ball Milling

High energy planetary ball milling has been used to synthesize pseudo-cubic highly-pure LaGaO3 in one hour from its oxide components in an air atmosphere.

Structural phase transition in lanthanum gallate as studied by Raman and X-ray diffraction measurements

2011 ◽  
Vol 248 (8) ◽  
pp. 1884-1893 ◽  
Author(s):  
P. Dhak ◽  
P. Pramanik ◽  
S. Bhattacharya ◽  
Anushree Roy ◽  
S. N. Achary ◽  
...  
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Structural Phase ◽  
Lanthanum Gallate ◽  
X Ray Diffraction ◽  
X Ray

Distortion Characteristics Across the Structural Phase Transition in (Cu1−x Zn x )WO4

1997 ◽  
Vol 53 (1) ◽  
pp. 102-112 ◽  
Author(s):  
P. F. Schofield ◽  
K. S. Knight ◽  
S. A. T. Redfern ◽  
G. Cressey
Keyword(s):  
Phase Transition ◽  
Solid Solution ◽  
Structural Phase Transition ◽  
Order Parameter ◽  
Structural Phase ◽  
Rietveld Analysis ◽  
Neutron Powder Diffraction Data ◽  
Jahn Teller ◽  
Jahn Teller Effect ◽  
Homogeneous Strain

Rietveld analysis of neutron powder diffraction data on the sanmartinite (ZnWO4)-cuproscheelite (CuWO4) solid solution has enabled the comparison of microscopic and macroscopic order parameters associated with the P2/c–P\overline 1 structural phase transition. The macroscopic spontaneous strain, calculated from the lattice parameters, conforms well with a second-order Landau model. Furthermore, this is also true of the symmetry-related atomistic M—O order parameter and the quadratic elongation of the MO6 octahedra. It is clear that the Jahn–Teller effect, associated with the divalent Cu cation, is the driving force for the phase transition and the excess elongation evident in the M—O(2) bond giving rise to the non-symmetry predicted strain element e 22. The existence of a large region of order parameter saturation at the copper-rich end of the solid solution is also associated with the MO6 elongation and the breakdown of the homogeneous strain field of the zinc solute atoms.

Structural Phase Transition of Multilayer VSe2

2020 ◽  
Vol 12 (22) ◽  
pp. 25143-25149 ◽  
Author(s):  
Dian Li ◽  
Xiong Wang ◽  
Chi-ming Kan ◽  
Daliang He ◽  
Zejun Li ◽  
...  
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Structural Phase

scholarly journals Raman spectroscopy study of the behavior of the soft mode in a structural phase transition in the Pr3Sb5O12 crystal

2015 ◽  
Vol 57 (11) ◽  
pp. 2286-2289 ◽  
Author(s):  
A. S. Oreshonkov ◽  
A. K. Khodzhibaev ◽  
A. S. Krylov ◽  
M. F. Umarov ◽  
A. N. Vtyurin
Keyword(s):  
Phase Transition ◽  
Raman Spectroscopy ◽  
Structural Phase Transition ◽  
Soft Mode ◽  
Structural Phase ◽  
Spectroscopy Study

High-pressure structural phase transition and metallization in Ga2S3 under non-hydrostatic and hydrostatic conditions up to 36.4 GPa

2021 ◽  
Author(s):  
Linfei Yang ◽  
Jianjun Jiang ◽  
Lidong Dai ◽  
Haiying Hu ◽  
Meiling Hong ◽  
...  
Keyword(s):  
Phase Transition ◽  
Raman Spectroscopy ◽  
High Pressure ◽  
Structural Properties ◽  
Structural Phase Transition ◽  
First Principles ◽  
Theoretical Calculations ◽  
Structural Phase

The vibrational, electrical and structural properties of Ga2S3 were explored by Raman spectroscopy, EC measurements, HRTEM and First-principles theoretical calculations under different pressure environments up to 36.4 GPa.

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