References
- Mattheiss , L. F. 1972 . Phys. Rev. B , 6 : 4718
- Mattheiss , L. F. 1972 . Phys. Rev. B , 6 : 4740
- Pertosa , P. and Michel-Calendini , F. M. 1978 . Phys. Rev. B , 17 : 2011
- Freire , J. D. and Katiyar , R. S. 1988 . Phys. Rev. B , 37 : 2074
- Yong-Nian , Xu , Ching , W. Y. and French , R. H. 1990 . Ferroelectrics , 111 : 23
- Cohen , R. E. and Krakauer , H. 1990 . Phys. Rev. B , 42 : 6416
- Cohen , R. E. and Krakauer , H. 1992 . Ferroelectrics , 136 : 65
- Resta , R. , Posternak , M. and Baldereschi , A. 1993 . Phys. Rev. Lett. , 70 : 1010
- Postnikov , A. V. , Neumann , T. and Borstel , G. 1993 . Phys. Rev. B , 48 : 5910
- King-Smith , R. D. and Vanderbilt , D. 1994 . Phys. Rev. B , 49 : 5828
- Singh , D. J. 1995 . Ferroelectrics , 164 : 143
- Kitamura , M. and Chen , H. 1997 . Ferroelectrics ,
- Jona , F. and Shirane , G. 1962 . Ferroelectrics crystals , International Series of Monographs on Solid State Physics Vol. 1 , Oxford : Pergamon .
- Wyckoff , R. W. G. 1960 . Crystal Structures , 2 NY : Interscience .
- Muller , O. and Roy , R. 1974 . “ The major ternary structural families ” . In Crystal Chemistry of Non-Metallic Materials , Vol. 4 , Berlin : Springer-Verlag .
- Holma , M. , Kitamura , M. and Chen , H. 1994 . J. Appl. Phys. , 76 : 451