References
- Aleksandrov , K. S. and Beznosikov , B. V. 1993 . Structural Phase Transitions in Crystals (the Potassium Sulphate Family). , Novosibirsk : Nauka .
- Mashiama , H. , Hasebe , K. and Tanisaki , S. 1979 . X-ray studies on successive structural transitions in LiRbSO4 . J. Phys. Soc. Jap. , 47 ( 4 ) : 1198 – 1204 .
- Fujimoto , S. , Yasuda , N. , Nibino , H. and Narayanan , P. S. 1984 . Ferroelectricity in lithium potassium sulphate . J. Phys. D. Appl. Phys. , 17 : 35 – 37 . [CROSSREF]
- Leitão , U. A. , Righi , A. , Bourson , P. and Pimenta , M. A. 1994 . Optical study of LiKSO4 crystals under uniaxial pressure . Phys. Rev. B , 50 ( 5 ) : 2754 – 2759 . [CROSSREF]
- Hikita , T. , Tsukahara , T. and Ikeda , T. 1982 . Ultrasonic study of ferroelectric (NH4)2BeF4. under hydrostatic high pressure. . J. Phys. Soc. Japan , 51 ( 9 ) : 2900 – 2909 . [CROSSREF]
- Gesi , K. and Ozawa , K. 1974 . Effect of hydrostatic pressure on the phase transitions in ferroelectric (NH4)2BeF4 . J. Phys. Soc. Japan , 36 : 1496 – 1499 . [CROSSREF]
- Shirokov , A. M. and Skomorokhova , T. L. 1974 . Influence of hydrostatic pressure on dielectric properties of (NH4)2BeF4. . Kristallogtaphia , 19 ( 3 ) : 580 – 583 . (in Russian)
- Onodera , A. and Shiozaki , Y. 1981 . The crystal structure of paraelectric ammonium fluoroberyllate at room temperature. . Ferroelectrics , 31 ( 1–2 ) : 27 – 36 .