Pyroelectric properties of high-resistant KTiOPO4 crystals in the temperature range 4.2-300 K

Yu V. Shaldin; S. Matyjasik; M. Kh Rabadanov; N. Angert; M. Roth; M. Tseitlin

doi:10.1134/S1063783406050167

Pyroelectric properties of high-resistant KTiOPO⁴ crystals in the temperature range 4.2-300 K

Yu V. Shaldin^*, S. Matyjasik, M. Kh Rabadanov, N. Angert, M. Roth, M. Tseitlin

^*Corresponding author for this work

The Institute of Applied Physics

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

The results of measuring the pyroelectric coefficient γ _s^σ of nominally perfect KTiOPO₄(KTP) crystals grown from solution in a melt with a potassium to phosphorus ratio of ∼2 are presented. The γ_s^σ(T) dependence is monotonie in the range from 4.2 to 250 K. Deviations from a linear dependence are observed beginning from 250 K, which is considered to be due to interstitial-potassium transport in the KTP crystal field. The spontaneous polarization of undamped KTP samples is estimated from the results of the measurements. In terms of the crystal-physics approach, it is shown that the main contribution to a polar state of KTP is made by the dipole moments of two nonequivalent mesoscopic tetrahedra forming two sublattices that are polarized in opposite directions and bound by Ti(1) ions.

Original language	English
Pages (from-to)	912-918
Number of pages	7
Journal	Physics of the Solid State
Volume	48
Issue number	5
DOIs	https://doi.org/10.1134/S1063783406050167
State	Published - May 2006

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title = "Pyroelectric properties of high-resistant KTiOPO4 crystals in the temperature range 4.2-300 K",

abstract = "The results of measuring the pyroelectric coefficient γ sσ of nominally perfect KTiOPO4(KTP) crystals grown from solution in a melt with a potassium to phosphorus ratio of ∼2 are presented. The γsσ(T) dependence is monotonie in the range from 4.2 to 250 K. Deviations from a linear dependence are observed beginning from 250 K, which is considered to be due to interstitial-potassium transport in the KTP crystal field. The spontaneous polarization of undamped KTP samples is estimated from the results of the measurements. In terms of the crystal-physics approach, it is shown that the main contribution to a polar state of KTP is made by the dipole moments of two nonequivalent mesoscopic tetrahedra forming two sublattices that are polarized in opposite directions and bound by Ti(1) ions.",

author = "Shaldin, \{Yu V.\} and S. Matyjasik and Rabadanov, \{M. Kh\} and N. Angert and M. Roth and M. Tseitlin",

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T1 - Pyroelectric properties of high-resistant KTiOPO4 crystals in the temperature range 4.2-300 K

AU - Shaldin, Yu V.

AU - Matyjasik, S.

AU - Rabadanov, M. Kh

AU - Angert, N.

AU - Roth, M.

AU - Tseitlin, M.

PY - 2006/5

Y1 - 2006/5

N2 - The results of measuring the pyroelectric coefficient γ sσ of nominally perfect KTiOPO4(KTP) crystals grown from solution in a melt with a potassium to phosphorus ratio of ∼2 are presented. The γsσ(T) dependence is monotonie in the range from 4.2 to 250 K. Deviations from a linear dependence are observed beginning from 250 K, which is considered to be due to interstitial-potassium transport in the KTP crystal field. The spontaneous polarization of undamped KTP samples is estimated from the results of the measurements. In terms of the crystal-physics approach, it is shown that the main contribution to a polar state of KTP is made by the dipole moments of two nonequivalent mesoscopic tetrahedra forming two sublattices that are polarized in opposite directions and bound by Ti(1) ions.

AB - The results of measuring the pyroelectric coefficient γ sσ of nominally perfect KTiOPO4(KTP) crystals grown from solution in a melt with a potassium to phosphorus ratio of ∼2 are presented. The γsσ(T) dependence is monotonie in the range from 4.2 to 250 K. Deviations from a linear dependence are observed beginning from 250 K, which is considered to be due to interstitial-potassium transport in the KTP crystal field. The spontaneous polarization of undamped KTP samples is estimated from the results of the measurements. In terms of the crystal-physics approach, it is shown that the main contribution to a polar state of KTP is made by the dipole moments of two nonequivalent mesoscopic tetrahedra forming two sublattices that are polarized in opposite directions and bound by Ti(1) ions.

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JO - Physics of the Solid State

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ER -

Pyroelectric properties of high-resistant KTiOPO⁴ crystals in the temperature range 4.2-300 K

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