Source:http://linkedlifedata.com/resource/pubmed/id/16983152
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
Pt 5
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| pubmed:dateCreated |
2006-9-19
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| pubmed:abstractText |
The crystal structure of TlH(2)PO(4) (TDP) has been studied at low temperature. The lattice parameters were derived from high-resolution X-ray powder diffraction in the temperature range between 8 and 300 K. A detailed crystal structure analysis of the antiferroelectric low-temperature phase TDP-III has been performed based on neutron diffraction data measured at 210 K on a twinned crystal consisting of two domain states. The structure model in the triclinic space group P\bar 1 is characterized by a complete ordering of all the H atoms in the asymmetric O-H...O hydrogen bonds. The phase transition from the ferroelastic TDP-II to the antiferroelectric TDP-III phase at 229.5 +/- 0.5 K is only slightly of first order and shows no detectable hysteresis effects. Its mechanism is driven by the hydrogen ordering between the partially ordered TDP-II state and the completely ordered TDP-III state. The polymorphism of TDP and the fully deuterated TlD(2)PO(4) (DTDP) is presented in the form of group-subgroup relations between the different space groups.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Oct
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| pubmed:issn |
0108-7681
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:volume |
62
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
719-28
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| pubmed:dateRevised |
2007-7-24
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| pubmed:year |
2006
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| pubmed:articleTitle |
Structural phase transition and hydrogen ordering of TlH2PO4 at low temperature.
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| pubmed:affiliation |
HANARO Utilization Technology Development Division, HANARO Application Center, Korea Atomic Energy Research Institute, 150 Deokjin-dong, Yusung, Daejon, Korea 305-353.
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| pubmed:publicationType |
Journal Article
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