Pyroelectric Properties of Potassium and Rubidium Titanyl-Arsenate Single Crystals in the Temperature Range of 4.2-300 K

Journal Article · Mon Nov 15 00:00:00 EST 2010 · Crystallography Reports

DOI:https://doi.org/10.1134/S1063774510060180· OSTI ID:22054068

Matyjasik, S ^[1]; Novikova, N E ^[2]; Tseitlin, M; Mozhaev, E ^[3]; Roth, M ^[4]

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1. International Laboratory of Strong Magnetic Fields and Low Temperatures (Poland)
2. Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)
3. Ariel University Center of Samaria (Israel)
4. Hebrew University, School of Applied Sciences (Israel)

The temperature dependences of the pyroelectric coefficients of KTiOAsO{sub 4} and RbTiOAsO{sub 4} single crystals grown by flux crystallization have been investigated in the temperature range of 4.2-300 K. With an increase in temperature, superionic conductivity first arises in KTiOAsO4 (at T > 200 K) and then (at T > 270 K) in RbTiOAsO{sub 4}. This conductivity is much higher in the samples polarized at T = 4.2 K. An exponential change in the crystal resistivity along the polar direction is simultaneously observed. The results of measurements in the range of 4.2-200 K indicate larger values of pyroelectric coefficients when compared with potassium and rubidium titanyl-phosphate crystals. A correlation between the pyroelectric coefficients and a change in the lattice constants at isomorphic substitutions of K atoms for Rb and P atoms for As has been revealed within the symmetry approach.

• OSTI ID: 22054068
• Journal Information: Crystallography Reports, Vol. 55, Issue 6; Other Information: Copyright (c) 2010 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7745
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ARSENATES
CRYSTALLIZATION
LATTICE PARAMETERS
MONOCRYSTALS
PHOSPHATES
POTASSIUM COMPOUNDS
RUBIDIUM COMPOUNDS
SYMMETRY
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K
TITANIUM COMPOUNDS