Isotope Effect in TlH2PO4 and TlD2PO4
1998 ◽
Vol 54
(6)
◽
pp. 790-797
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Keyword(s):
The crystal structure of the antiferroelectric phase of TlD2PO4, deuterated thallium dihydrogenphosphate, has been determined from single-crystal neutron diffraction data collected at room temperature. The para-antiferroelectric transition (T_c^d = 353 K) of TlD2PO4 is analysed from a structural point of view and compared with the phase transition of TlH2PO4 at TI = 357 K, already characterized. The distinct phase sequences observed in the two compounds when decreasing temperature from that of the high-temperature prototype phase (prototype phase/room-temperature phase/low-temperature phase) are discussed and associated with the different ordering of the two crystallographically inequivalent H (D) atoms existing in the prototype phase.
2000 ◽
Vol 55
(1-2)
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pp. 225-229
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1986 ◽
Vol 90
(1)
◽
pp. 1-9
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1999 ◽
Vol 54
(3)
◽
pp. 372-376
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2015 ◽
Vol 221
◽
pp. 224-229
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2006 ◽
Vol 62
(1)
◽
pp. 102-108
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1999 ◽
Vol 475
(1)
◽
pp. 35-41
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2000 ◽
Vol 523
(1-3)
◽
pp. 163-173
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