Onodera group

Research of fundamentals between microscopic atomic arrangement and macroscopic properties in dielectrics and its related novel materials. Stru ctural phase transitions and critical phenomena are studied by means of low-temperature X-ray diffraction, ac calorimetry and dielectric measurements. Special interests are paid recently for new structural phase transitions in semiconductor ZnO:Li system and ferroelectrics with electron-phonon coupling.

Staff
 
ONODERA Akira (Assoc. Prof.)  Akira.Onodera@S1.hines.hokudai.ac.jp

Students

TAMAKI Norihiko (M2) 
KAWAMURA Yuko   (M1)
SAWADA Takuya   (M1)

Recent Publications (1995)
(1)  Long-Term Relaxation Phenomena in INC Phase in K2ZnCl4,
       Ferroelectrics  172 (1995) p.172.
(2)  Dielectric Study in K2TeO3 : A New Ferroelectric,
       J. Phys. Soc. Jpn.  64 (1995) p.1481.
(3)  Three Dimensional XY Critical Behavior of Heat Capacity at Normal-
       Incommensurate Phase Transition in Rb2ZnCl4, 
       J. Phys. Soc. Jpn. 64 (1995) p.822.
(4)  Specific Heat of Amorphous (Hf, Ta)Fe2 Alloys,
       J. Mag. Mag. Mater.  140-144 (1995) p.309.
(5)  Specific Heat of a beta-Tb2(MoO4)3 Crystal in the Region of the 
       Nonideal Ferroelectric Phase Transition,  JETP  81 (1995) p.202.
(6)  Molecular Motion of PO4 in KDP at Ferroelectric Phase Transition, 
        Ferroelectrics  170 (1995) p. 17.
(7)  Specific Heat and Axial Pressure Influence on Phase Transitions in
       NaNbO3:Mn, Ferroelectrics  172 (1995) p.295.
(8)  Essay " Dream of Pepinsky"  (in Japanese),  Kotai Buturi  30 (1995) 
       p.14.
(9)  Dielectric Anomaly and X-ray Study of Phase Transition in K2TeO3 
       (in Japanese), Ann. Rep.  High Brill. X-ray Lab.  12 (1995) p. 8.