EVIDENCES OF A STRUCTURAL PHASE TRANSITION IN THE NEW Pb(ZryTi1 - y)O3 MODIFIED TELLURITE GLASS-CERAMIC COMPOSITE

2011 ◽  
Vol 01 (02) ◽  
pp. 185-190 ◽  
Author(s):  
J. D. S. GUERRA ◽  
C. R. HATHENHER
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Glass Ceramic ◽  
Ferroelectric Properties ◽  
Structural Phase ◽  
Polar Phase ◽  
X Ray Diffraction ◽  
System A ◽  
Glass Ceramic Composite ◽  
Quench Method

The physical properties of the new TeO 2 – B2O3 – PbO2 (TBP)-based glass system, obtained from the usual melt-quench method, have been investigated taking into account the influence of the Pb ( Zr y Ti 1 - y) O 3 (PZT) ferroelectric system. A crystalline-like structure, which characterizes a glass-ceramic-like state, promoted by the ferroelectric phase, has been revealed from the X-ray diffraction results for the sample with higher PZT concentration. On the other hand, results on the dielectric response revealed noticeable dielectric anomalies, which until now have not been reported. In fact, the dielectric and ferroelectric properties suggest the existence of a structural phase transition induced by the PZT crystalline phase, which indeed have been related to the ferroelectric polar-phase regions embedded into the glass matrix.

scholarly journals Evolution of two-step structural phase transition in Fe1+dTe detected by low-temperature x-ray diffraction

2012 ◽  
Vol 152 (12) ◽  
pp. 1047-1051 ◽  
Author(s):  
Yoshikazu Mizuguchi ◽  
Kentaro Hamada ◽  
Kazuki Goto ◽  
Hiroshi Takatsu ◽  
Hiroaki Kadowaki ◽  
...  
Keyword(s):  
Phase Transition ◽  
Low Temperature ◽  
Structural Phase Transition ◽  
Structural Phase ◽  
X Ray Diffraction ◽  
X Ray

Metal-Insulator and Structural Phase Transition Observed by ESR Spectroscopy and X-Ray Diffraction inKC60

2001 ◽  
Vol 86 (19) ◽  
pp. 4346-4349 ◽  
Author(s):  
C. Coulon ◽  
A. Pénicaud ◽  
R. Clérac ◽  
R. Moret ◽  
P. Launois ◽  
...  
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Esr Spectroscopy ◽  
Structural Phase ◽  
X Ray Diffraction ◽  
Metal Insulator ◽  
X Ray

scholarly journals Structural Phase Transition and Related Thermoelectric Properties in Sn Doped AgBiSe2

Crystals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1016
Author(s):  
Xiao-Cun Liu ◽  
Ming-Yan Pan
Keyword(s):  
Crystal Structure ◽  
Phase Transition ◽  
Thermal Conductivity ◽  
Thermoelectric Properties ◽  
Thermoelectric Material ◽  
Structural Phase Transition ◽  
Structural Phase ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Complex Structural

AgBiSe2, which exhibits complex structural phase transition behavior, has recently been considered as a potential thermoelectric material due to its intrinsically low thermal conductivity. In this work, we investigate the crystal structure of Sn-doped AgBiSe2 through powder X-ray diffraction and differential scanning calorimetry measurements. A stable cubic Ag1−x/2Bi1−x/2SnxSe2 phase can be obtained at room temperature when the value of x is larger than 0.2. In addition, the thermoelectric properties of Ag1−x/2Bi1−x/2SnxSe2 (x = 0.2, 0.25, 0.3, 0.35) are investigated, revealing that Ag1−x/2Bi1−x/2SnxSe2 compounds are intrinsic semiconductors with a low lattice thermal conductivity. This work provides new insights into the crystal structure adjustment of AgBiSe2 and shows that Ag1−x/2Bi1−x/2SnxSe2 is a potentially lead-free thermoelectric material candidate.

scholarly journals Anisotropic lattice softening near the structural phase transition in the thermosalient crystal 1,2,4,5-tetrabromobenzene

2018 ◽  
Vol 20 (13) ◽  
pp. 8523-8532 ◽  
Author(s):  
Boris A. Zakharov ◽  
Adam A. L. Michalchuk ◽  
Carole A. Morrison ◽  
Elena V. Boldyreva
Keyword(s):  
Phase Transition ◽  
Structural Phase Transition ◽  
Structural Phase ◽  
Computational Techniques ◽  
X Ray Diffraction ◽  
X Ray ◽  
Anisotropic Lattice ◽  
Lattice Softening

Mechanism of crystal jumping on heating was revealed by X-ray diffraction and computational techniques.

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