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Growth and dielectric and pyroelectric properties of magnesium-doped potassium lithium niobate single crystal

Journal Article


Abstract


  • Magnesium doped potassium lithium niobate single crystal (K3Li2Nb5O15:Mg, denoted as KLN:Mg) has been grown by modified Czochralski technique. It has tetragonal tungsten bronze type structure. At room temperature, the point group is 4 mm with the lattice constants a = 1.262 nm and c = 0.398 nm. Dielectric, pyroelectric properties of a and c plates were studied in the temperature range from 10 to 700 K. The frequency dependence of dielectric constant in the frequency range 5 × 102 to 5 × 108 Hz was measured. Results reveal a paraelectric-ferroelectric phase transition near 623 K and a ferroelectric-ferroelectric phase transition near 80 K.

Publication Date


  • 2000

Scopus Eid


  • 2-s2.0-0034275673

Start Page


  • 193

End Page


  • 198

Volume


  • 181

Issue


  • 1

Abstract


  • Magnesium doped potassium lithium niobate single crystal (K3Li2Nb5O15:Mg, denoted as KLN:Mg) has been grown by modified Czochralski technique. It has tetragonal tungsten bronze type structure. At room temperature, the point group is 4 mm with the lattice constants a = 1.262 nm and c = 0.398 nm. Dielectric, pyroelectric properties of a and c plates were studied in the temperature range from 10 to 700 K. The frequency dependence of dielectric constant in the frequency range 5 × 102 to 5 × 108 Hz was measured. Results reveal a paraelectric-ferroelectric phase transition near 623 K and a ferroelectric-ferroelectric phase transition near 80 K.

Publication Date


  • 2000

Scopus Eid


  • 2-s2.0-0034275673

Start Page


  • 193

End Page


  • 198

Volume


  • 181

Issue


  • 1