References
- Pimenta , M. A. , Vieira , S. L. A. and Dantas , M. S. 1992 . Solid State Commun. , 82 ( 10 ) : 755
- Kabelka , H. and Kuchler , G. 1988 . Ferroelectrics , 88 : 93
- Holuj Drozdowski , F. and Czajkowski , M. 1983 . Solid State Commun , 45 : 1005
- Godfrey , L. and Philip , J. 1996 . Solid State Commun , 97 : 635
- Pimenta , M. A. , Luspin , Y. and Hauret , G. 1986 . Solid State Commun , 59 : 481
- Wang-Li-Fang and Zhang Dao-fan . 1985 . Chin. Phys. Lett. , 2 : 201
- Sharma , D. P. 1979 . Pramana , 13 : 223
- Godfrey , L. and Philip , J. 1994 . J. Appl. Phys. , 75 ( 5 ) : 2393
- May , J. E. 1958 . Jr. IRE. Natl. Conv. Rec , 6 : 134 part2
- Papadakis , E. P. 1976 . ‘Physical Acoustics’ Vol. XII , Edited by: Mason , W. P. and Thurston , R. N. 227 New York : Academic Press .
- Tomaszewski , P. E. and Lukaszewicz , K. 1982 . Phys. Status Solidi A , 71 : K53
- JCPDS file No. 810041