Ferroelectric phase transition temperatures of KTiOPO4 crystals grown from self-fluxes

N. Angert; M. Tseitlin; E. Yashchin; M. Roth

doi:10.1063/1.114575

Ferroelectric phase transition temperatures of KTiOPO₄ crystals grown from self-fluxes

N. Angert^*, M. Tseitlin, E. Yashchin, M. Roth

^*Corresponding author for this work

The Institute of Applied Physics

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

42 Scopus citations

Abstract

The origin of diversity in the reported ferroelectric phase transition (Curie) temperatures T_c, of KTiOPO₄ (KTP) crystals grown from self-fluxes has been studied. A series of crystals has been grown by the top-seeded solution method from fluxes of different K/P molar ratios and solute concentrations, covering most of the KTP crystallization field in the K ₂O-P₂O₅-TiO₂ ternary system. Curie temperatures of as-grown and high-temperature annealed crystals have been measured using the standard dielectric technique and found to spread from 883 to 960°C. We show that the actual T_c values depend on the solution chemical composition, and a functional representation of this dependence is given. Inherent gradients of the T_c in as-grown KTP crystals are discussed in terms of the nonuniformity of their physical properties.

Original language	English
Pages (from-to)	1941
Number of pages	1
Journal	Applied Physics Letters
Volume	67
DOIs	https://doi.org/10.1063/1.114575
State	Published - 1995

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abstract = "The origin of diversity in the reported ferroelectric phase transition (Curie) temperatures Tc, of KTiOPO4 (KTP) crystals grown from self-fluxes has been studied. A series of crystals has been grown by the top-seeded solution method from fluxes of different K/P molar ratios and solute concentrations, covering most of the KTP crystallization field in the K 2O-P2O5-TiO2 ternary system. Curie temperatures of as-grown and high-temperature annealed crystals have been measured using the standard dielectric technique and found to spread from 883 to 960°C. We show that the actual Tc values depend on the solution chemical composition, and a functional representation of this dependence is given. Inherent gradients of the Tc in as-grown KTP crystals are discussed in terms of the nonuniformity of their physical properties.",

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T1 - Ferroelectric phase transition temperatures of KTiOPO4 crystals grown from self-fluxes

AU - Angert, N.

AU - Tseitlin, M.

AU - Yashchin, E.

AU - Roth, M.

PY - 1995

Y1 - 1995

N2 - The origin of diversity in the reported ferroelectric phase transition (Curie) temperatures Tc, of KTiOPO4 (KTP) crystals grown from self-fluxes has been studied. A series of crystals has been grown by the top-seeded solution method from fluxes of different K/P molar ratios and solute concentrations, covering most of the KTP crystallization field in the K 2O-P2O5-TiO2 ternary system. Curie temperatures of as-grown and high-temperature annealed crystals have been measured using the standard dielectric technique and found to spread from 883 to 960°C. We show that the actual Tc values depend on the solution chemical composition, and a functional representation of this dependence is given. Inherent gradients of the Tc in as-grown KTP crystals are discussed in terms of the nonuniformity of their physical properties.

AB - The origin of diversity in the reported ferroelectric phase transition (Curie) temperatures Tc, of KTiOPO4 (KTP) crystals grown from self-fluxes has been studied. A series of crystals has been grown by the top-seeded solution method from fluxes of different K/P molar ratios and solute concentrations, covering most of the KTP crystallization field in the K 2O-P2O5-TiO2 ternary system. Curie temperatures of as-grown and high-temperature annealed crystals have been measured using the standard dielectric technique and found to spread from 883 to 960°C. We show that the actual Tc values depend on the solution chemical composition, and a functional representation of this dependence is given. Inherent gradients of the Tc in as-grown KTP crystals are discussed in terms of the nonuniformity of their physical properties.

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Ferroelectric phase transition temperatures of KTiOPO₄ crystals grown from self-fluxes

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