Polarization echo in ferroelectric phase transition region

1978 ◽  
Vol 22 (1) ◽  
pp. 755-757
Author(s):  
V. S. Romanov ◽  
V. I. Bashkov ◽  
V. M. Berezov ◽  
V. D. Korepanov
Keyword(s):  
Phase Transition ◽  
Transition Region ◽  
Ferroelectric Phase Transition ◽  
Ferroelectric Phase ◽  
Phase Transition Region

Origin of optical anomalies in the ferroelectric phase transition region of SbSI and SbSBr crystals

1998 ◽  
Vol 215 (1) ◽  
pp. 221-231 ◽  
Author(s):  
A. Audzijonis ◽  
S. Kvedaravičius ◽  
V. Paulikas ◽  
J. Siroicas ◽  
N. Mykolaitienė ◽  
...  
Keyword(s):  
Phase Transition ◽  
Transition Region ◽  
Ferroelectric Phase Transition ◽  
Ferroelectric Phase ◽  
Phase Transition Region

Reflection and vibrational spectra of SbSCl0.1I0.9 crystals in the ferroelectric phase-transition region

2014 ◽  
Vol 75 (2) ◽  
pp. 194-197 ◽  
Author(s):  
Algirdas Audzijonis ◽  
Leonardas Žigas ◽  
Raimundas Žaltauskas ◽  
Raimundas Sereika
Keyword(s):  
Phase Transition ◽  
Transition Region ◽  
Vibrational Spectra ◽  
Ferroelectric Phase Transition ◽  
Ferroelectric Phase ◽  
Phase Transition Region

Domain Structure, Local Hysteresis and Ferroelectric Phase Transition in (CH 3 NH 3 ) 5 Bi 2 Br 11 (MAPBBB) Single Crystals

2003 ◽  
Vol 295 (1) ◽  
pp. 121-129
Author(s):  
M. Wojtaś ◽  
V. V. Shvartsman ◽  
R. Jakubas ◽  
A. Kholkin
Keyword(s):  
Phase Transition ◽  
Single Crystals ◽  
Domain Structure ◽  
Ferroelectric Phase Transition ◽  
Ferroelectric Phase

scholarly journals The origin of the lattice thermal conductivity enhancement at the ferroelectric phase transition in GeTe

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Đorđe Dangić ◽  
Olle Hellman ◽  
Stephen Fahy ◽  
Ivana Savić
Keyword(s):  
Phase Transition ◽  
Thermal Conductivity ◽  
Phase Transitions ◽  
Thermoelectric Materials ◽  
Ferroelectric Phase Transition ◽  
Lattice Thermal Conductivity ◽  
Ferroelectric Phase ◽  
Structural Phase ◽  
High Symmetry ◽  
Structural Phase Transitions

AbstractThe proximity to structural phase transitions in IV-VI thermoelectric materials is one of the main reasons for their large phonon anharmonicity and intrinsically low lattice thermal conductivity κ. However, the κ of GeTe increases at the ferroelectric phase transition near 700 K. Using first-principles calculations with the temperature dependent effective potential method, we show that this rise in κ is the consequence of negative thermal expansion in the rhombohedral phase and increase in the phonon lifetimes in the high-symmetry phase. Strong anharmonicity near the phase transition induces non-Lorentzian shapes of the phonon power spectra. To account for these effects, we implement a method of calculating κ based on the Green-Kubo approach and find that the Boltzmann transport equation underestimates κ near the phase transition. Our findings elucidate the influence of structural phase transitions on κ and provide guidance for design of better thermoelectric materials.

Order parameter of the KDP ferroelectric phase transition measured by neutron diffractometry

1976 ◽  
Vol 14 (1) ◽  
pp. 731-734 ◽  
Author(s):  
C. M. E. Zeyen ◽  
H. Meister
Keyword(s):  
Phase Transition ◽  
Ferroelectric Phase Transition ◽  
Order Parameter ◽  
Ferroelectric Phase

scholarly journals Electric-field-induced antiferroelectric to ferroelectric phase transition in mechanically confinedPb0.99Nb0.02[(Zr0.57Sn0.43)0.94Ti0.06]0.98O3

2010 ◽  
Vol 81 (1) ◽  
Author(s):  
X. Tan ◽  
J. Frederick ◽  
C. Ma ◽  
E. Aulbach ◽  
M. Marsilius ◽  
...  
Keyword(s):  
Phase Transition ◽  
Electric Field ◽  
Ferroelectric Phase Transition ◽  
Ferroelectric Phase

scholarly journals Microdomain dynamics in single-crystalBaTiO3during paraelectric-ferroelectric phase transition measured with time-of-flight neutron scattering

2015 ◽  
Vol 92 (17) ◽  
Author(s):  
A. Pramanick ◽  
X. P. Wang ◽  
C. Hoffmann ◽  
S. O. Diallo ◽  
M. R. V. Jørgensen ◽  
...  
Keyword(s):  
Phase Transition ◽  
Neutron Scattering ◽  
Ferroelectric Phase Transition ◽  
Ferroelectric Phase ◽  
Time Of Flight
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