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Phase Transitions in Trirubidium Hydrogen Diselenate Rb 3 H(SeO 4 ) 2

1979; Physical Society of Japan; Volume: 47; Issue: 2 Linguagem: Inglês

10.1143/jpsj.47.681

1347-4073

M. Ichikawa,

Nonlinear Optical Materials Research

It has been shown that Rb 3 H(SeO 4 ) 2 undergoes successive phase transitions at 178°C and 302°C by the DTA analysis. The dielectric behavior is quite similar to that in Rb 3 H(SO 4 ) 2 in a range from room temperature to liquid nitrogen temperature. In Rb 3 H(XO 4 ) 2 (X=S, Se) system a corresponding relation between the phases can be recognized in contrast to (NH 4 ) 3 H(XO 4 ) 2 system.