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Phys. Rev. B 68, 092104 (2003) [4 pages]

Particle-size effect on the III-IV phase transition in CsZnPO4

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Isao Yamashita1, Hitoshi Kawaji1, Tooru Atake1, Yoshihiro Kuroiwa2, and Akikatsu Sawada2
1Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
2Faculty of Science, Okayama University, Tsushima-naka, Okayama 700-8530, Japan

Received 7 November 2002; published 9 September 2003

Extremely large particle-size effect was found on the phase transition in III-IV phase transition in CsZnPO4 (CZP) and the thermodynamic studies were made by high-precision calorimetry and synchrotron-radiation x-ray powder diffractometry. The phase transition was not observed in the single crystals smaller than 0.1 mm, while the crystals larger than 0.25 mm showed the III-IV phase transition at 220 K. The diffractometry revealed that the powder sample had the structure of phase III from room temperature to liquid-nitrogen temperature.


©2003 The American Physical Society

URL: http://link.aps.org/abstract/PRB/v68/e092104
DOI: 10.1103/PhysRevB.68.092104
PACS: 64.70.Kb, 65.40.Ba

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