F-band absorption and thermoluminescence of NaCl single crystals X-ray irradiated at elevated temperatures and later subjected to high electric fields or laser excitation

1990 ◽  
Vol 25 (1) ◽  
pp. 83-86 ◽  
Author(s):  
B. K. Choudhary ◽  
K. V. Rao ◽  
R. N. P. Choudhary
Keyword(s):  
Single Crystals ◽  
Electric Fields ◽  
Elevated Temperatures ◽  
Laser Excitation ◽  
X Ray ◽  
Band Absorption ◽  
High Electric Fields

Effect of laser excitation on F-band absorption and thermoluminescence of X-ray irradiated KBr single crystals

1986 ◽  
Vol 21 (12) ◽  
pp. 4315-4317 ◽  
Author(s):  
G. Prasad ◽  
B. K. Roul ◽  
R. N. P. Chaudhary ◽  
K. V. Rao
Keyword(s):  
Single Crystals ◽  
Laser Excitation ◽  
X Ray ◽  
Band Absorption

Domain Dynamics under Unipolar Electric Fields for BaTiO3 Single Crystals

2013 ◽  
Vol 582 ◽  
pp. 40-43
Author(s):  
Shotaro Ishikawa ◽  
Yuuki Kitanaka ◽  
Yuji Noguchi ◽  
Masaru Miyayama ◽  
Chikako Moriyoshi ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Single Crystals ◽  
Electric Fields ◽  
Direct Evidence ◽  
Reversible Change ◽  
X Ray ◽  
Domain Structures ◽  
Diffraction Patterns ◽  
Domain Dynamics

Domain structures and dynamics of BaTiO3 single crystals under in-situ electric fields along <110>c were investigated by using synchrotron radiation single-crystal X-ray diffractions. Diffraction patterns clearly show the presence of a 90 ° domain structure in the crystals poled along <110>c. The diffraction analysis provides direct evidence of a reversible change in the volume fractions of two kinds of the 90 o domains under unipolar in-situ electric fields. This reversible change in the domain structures under unipolar fields is suggested to originate from the interaction between spontaneous polarization and defect dipoles composed of acceptor and oxygen vacancy.

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