Raman and Brillouin–Rayleigh scattering studies of the displacive phase transition in malononitrile at 294.7 K

1979 ◽  
Vol 71 (9) ◽  
pp. 3813-3823 ◽  
Author(s):  
Y. Higashigaki ◽  
C. H. Wang
Keyword(s):  
Phase Transition ◽  
Rayleigh Scattering ◽  
Displacive Phase Transition

Reversible displacive phase transition in [Ni(en)3]2+(NO3−)2: a potential temperature calibrant for area-detector diffractometers

2003 ◽  
Vol 36 (1) ◽  
pp. 141-145 ◽  
Author(s):  
L. J. Farrugia ◽  
P. Macchi ◽  
A. Sironi
Keyword(s):  
Phase Transition ◽  
Transition Temperature ◽  
Low Temperature ◽  
Potential Temperature ◽  
Rapid Decrease ◽  
Data Sets ◽  
Area Detector ◽  
Displacive Phase Transition ◽  
Orientation Matrix ◽  
Bruker Smart Apex

The coordination complex [Ni(en)3]2+(NO{}_{3}^{- })2(en = 1,2-diaminoethane) undergoes a sharp reversible displacive phase transition at ∼109 K, changing space group fromP6322 above the transition temperature toP6522 below. The phase change is accompanied by a tripling of thecaxis on cooling, resulting in an easy detection of the transition in images from area-detector diffractometers. The transition has been followed using a Nonius KappaCCD and a Bruker SMART APEX CCD. Data sets were collected over the temperature range 100–113 K and integrated using the low-temperature orientation matrix. Reflections withl≠ 3nshow a smooth and rapid decrease in intensity to zero on warming from 106.5 to 111 K. The results are reproducible to within ±2 K in two laboratories and suggest that this compound may be useful as a liquid-nitrogen cryo-calibrant for diffraction instruments equipped with area detectors.

Non-convergent ordering and displacive phase transition in pigeonite: in situ HT XRD study

2002 ◽  
Vol 29 (5) ◽  
pp. 331-340 ◽  
Author(s):  
F. Cámara ◽  
M. A. Carpenter ◽  
M. C. Domeneghetti ◽  
V. Tazzoli
Keyword(s):  
Phase Transition ◽  
Xrd Study ◽  
Displacive Phase Transition

scholarly journals Evidence of an Improper Displacive Phase Transition in Cd2Re2O7 via Time-Resolved Coherent Phonon Spectroscopy

2018 ◽  
Vol 120 (4) ◽  
Author(s):  
J. W. Harter ◽  
D. M. Kennes ◽  
H. Chu ◽  
A. de la Torre ◽  
Z. Y. Zhao ◽  
...  
Keyword(s):  
Phase Transition ◽  
Coherent Phonon ◽  
Time Resolved ◽  
Displacive Phase Transition
Sign in / Sign up

Export Citation Format

Share Document