Phase mixing in the critical region of the ferroelectric phase transition in KD2PO4 |
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| Authors: | CME Zeyen H Meister W Kley |
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| Institution: | Institut Laue-Langevin, B.P. 156, 38042 Grenoble Cedex, France;C.C.R. EURATOM, Ispra, Italy |
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| Abstract: | A novel neutron high resolution double crystal arrangement has been used to measure changes in d-spacing, d-spread and mosaicity through the first order ferroelectric phase transition of DKDP. Coexistence of both para and ferroelectric phases was directly observed in the range Tc to Tc — 3 K. No hysteresis could be detected within the precision of the temperature measurement (10-3K). The origin of the overshoot effect has been elucidated. |
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