scholarly journals Time-resolved x-ray diffraction and electrical resistance measurements of structural phase transitions in zirconium

2014 ◽  
Vol 500 (3) ◽  
pp. 032020 ◽  
Author(s):  
N Velisavljevic ◽  
S Sinogeikin ◽  
R Saavedra ◽  
R S Chellappa ◽  
A Rothkirch ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Electrical Resistance ◽  
Structural Phase ◽  
Structural Phase Transitions ◽  
X Ray Diffraction ◽  
Time Resolved ◽  
X Ray ◽  
Electrical Resistance Measurements

PROBING PHOTOINDUCED STRUCTURAL PHASE TRANSITIONS BY FAST OR ULTRA-FAST TIME-RESOLVED X-RAY DIFFRACTION

2004 ◽  
pp. 309-342 ◽  
Author(s):  
Hervé Cailleau ◽  
Eric Collet ◽  
Marylise Buron-Le Cointe ◽  
Marie-Hélène Lemée-Cailleau ◽  
Shin-ya Koshihara
Keyword(s):  
Phase Transitions ◽  
Structural Phase ◽  
Fast Time ◽  
Structural Phase Transitions ◽  
X Ray Diffraction ◽  
Time Resolved ◽  
X Ray

Temperature-induced structural phase transitions in RERhSn (RE = Y, Gd-Tm, Lu)

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Simon Engelbert ◽  
Rolf-Dieter Hoffmann ◽  
Jutta Kösters ◽  
Steffen Klenner ◽  
Rainer Pöttgen
Keyword(s):  
Rare Earth ◽  
Phase Transitions ◽  
Driving Force ◽  
Room Temperature ◽  
Structural Phase ◽  
Structural Phase Transitions ◽  
Line Broadening ◽  
X Ray Diffraction ◽  
Temperature Dependent ◽  
X Ray

Abstract The structures of the equiatomic stannides RERhSn with the smaller rare earth elements Y, Gd-Tm and Lu were reinvestigated on the basis of temperature-dependent single crystal X-ray diffraction data. GdRhSn crystallizes with the aristotype ZrNiAl at 293 and 90 K. For RE = Y, Tb, Ho and Er the HP-CeRuSn type (approximant with space group R3m) is already formed at room temperature, while DyRhSn adopts the HP-CeRuSn type below 280 K. TmRhSn and LuRhSn show incommensurate modulated variants with superspace groups P31m(1/3; 1/3; γ) 000 (No. 157.1.23.1) (γ = 3/8 for TmRhSn and γ = 2/5 for LuRhSn). The driving force for superstructure formation (modulation) is a strengthening of Rh–Sn bonding. The modulation is expressed in a 119Sn Mössbauer spectrum of DyRhSn at 78 K through line broadening.

scholarly journals Structural and optical study of the phase transitions in Lead Hafnate, PbHfO3

2014 ◽  
Vol 70 (a1) ◽  
pp. C58-C58
Author(s):  
Steven Huband ◽  
Anthony Glazer ◽  
Krystian Roleder ◽  
Andrzej Majchrowski ◽  
Pam Thomas
Keyword(s):  
Phase Transitions ◽  
Structural Phase ◽  
Orthorhombic Phase ◽  
Temperature Hysteresis ◽  
Structural Phase Transitions ◽  
X Ray Diffraction ◽  
Space Group ◽  
X Ray ◽  
Fundamental Understanding ◽  
Distinct Temperature

Lead Hafnate undergoes two structural phase transitions as a function of temperature. The first occurs at about 1630C, consisting of a transition from an antiferroelectric orthorhombic Pbam structure [1] to another antiferroelectric orthorhombic phase with an as-yet undetermined space group. The second is to a paraelectric cubic Pm3m structure at 2090C. Dielectric spectroscopy measurements on a single crystal have shown a distinct temperature hysteresis at the orthorhombic to orthorhombic transition [2]. Recently, dielectric measurements on a ceramic sample have shown a much larger temperature hysteresis and following x-ray diffraction measurements, it is suggested that the second orthorhombic phase is in space group A2mm and undergoes another transition to a tetragonal P4mm structure before the cubic transition [3]. We report on the results of an investigation of a PbHfO3crystal using a combination of high-resolution x-ray diffraction and birefringence imaging measurements with the Metripol system. These measurements have been performed as a function of temperature from the room-temperature orthorhombic structure to the high-temperature cubic structure. The results are discussed both in the context of the published work and fundamental understanding of the origin of antiferroelectricity.

X-ray diffraction and Raman study of DL-alanine at high pressure: revision of phase transitions

2012 ◽  
Vol 68 (4) ◽  
pp. 412-423 ◽  
Author(s):  
Nikolay A. Tumanov ◽  
Elena V. Boldyreva
Keyword(s):  
Phase Transition ◽  
Phase Transitions ◽  
Structural Phase ◽  
Group Symmetry ◽  
Second Phase ◽  
Structural Phase Transitions ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cell Parameters ◽  
Raman Study

The effect of pressure on DL-alanine has been studied by X-ray powder diffraction (up to 8.3 GPa), single-crystal X-ray diffraction and Raman spectroscopy (up to ∼ 6 GPa). No structural phase transitions have been observed. At ∼ 1.5–2 GPa, cell parameters b and c become accidentally equal to each other, but the space-group symmetry does not change. There is no phase transition between 1.7 and 2.3 GPa, contrary to what has been reported earlier [Belo et al. (2010). Vibr. Spectrosc. 54, 107–111]. The presence of the second phase transition, which was claimed to appear within the pressure range from 6.0 to 7.3 GPa (Belo et al., 2010), is also argued. The changes in the Raman spectra have been shown to be continuous in all the pressure ranges studied.

Structural Phase Transitions of Endohedral Metallofullerene La@C82 Studied by Single Crystal X-Ray Diffraction

2000 ◽  
Vol 340 (1) ◽  
pp. 639-642 ◽  
Author(s):  
Tetsu Watanuki ◽  
Akihiko Fujiwara ◽  
Kenji Ishii ◽  
Yasuyuki Matuoka ◽  
Hiroyoshi Suematsu ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Single Crystal ◽  
Structural Phase ◽  
Structural Phase Transitions ◽  
X Ray Diffraction ◽  
X Ray ◽  
Endohedral Metallofullerene

X-ray diffraction study of the structural phase transitions in RbCN under high pressure

1997 ◽  
Vol 58 (12) ◽  
pp. 2101-2106 ◽  
Author(s):  
S. Shinohara ◽  
H. Iwasaki ◽  
Y. Yoshimura
Keyword(s):  
High Pressure ◽  
Phase Transitions ◽  
Diffraction Study ◽  
Structural Phase ◽  
Structural Phase Transitions ◽  
X Ray Diffraction ◽  
X Ray

Anin SituTemperature-Dependent Electron and X-ray Diffraction Study of Structural Phase Transitions in ZrV2O7

1998 ◽  
Vol 137 (1) ◽  
pp. 161-167 ◽  
Author(s):  
R.L Withers ◽  
J.S.O Evans ◽  
J Hanson ◽  
A.W Sleight
Keyword(s):  
Phase Transitions ◽  
Diffraction Study ◽  
Structural Phase ◽  
Structural Phase Transitions ◽  
X Ray Diffraction ◽  
X Ray

Studies on 2H NMR and single crystal X-ray diffraction of thermochromic bis (N,N-diethyl-1,2-ethanediamine) nickel(II) complexes with and without structural phase transitions

1995 ◽  
Vol 345 ◽  
pp. 159-165 ◽  
Author(s):  
Ryuichi Ikeda ◽  
Kyoko Kotani ◽  
Hiroshi Ohki ◽  
Shin'ichi Ishimaru ◽  
Ken-Ichi Okamoto ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Single Crystal ◽  
Structural Phase ◽  
2H Nmr ◽  
Structural Phase Transitions ◽  
X Ray Diffraction ◽  
X Ray

Structural phase transitions in YBaCo4O7 + x cobaltate upon variations in oxygen content, according to X-ray diffraction data obtained using synchrotron radiation

2013 ◽  
Vol 77 (2) ◽  
pp. 151-154 ◽  
Author(s):  
A. V. Alekseev ◽  
M. Yu. Kameneva ◽  
L. P. Kozeeva ◽  
A. N. Lavrov ◽  
N. V. Podberezskaya ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Synchrotron Radiation ◽  
Oxygen Content ◽  
Diffraction Data ◽  
Structural Phase ◽  
Structural Phase Transitions ◽  
X Ray Diffraction ◽  
X Ray
Sign in / Sign up

Export Citation Format

Share Document