[14a-F203-1~13] 15.1 Bulk crystal growth

[14a-F203-11] Effect of oxygen defect on melting point and Curie point of impurity-doped lithium niobate

〇Chihiro Koyama¹, Jun Nozawa¹, Junpei Okada¹, Satoshi Uda¹ (1.IMR, Tohoku Univ.)

Keywords:Melting temperature, Curie temperature, Point defect

Curie temperature and melting temperature of impurity-doped lithium niobate (LN) that was annealed in Ar was measured. The results suggest that redox of impurity make it possible to control Curie temperature and melting temperature. Redox states of impurity change concentrations of oxygen defect in LN.