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Soft acoustic mode in thallium arsenic Sulphide Tl3AsS4†

✍ Scribed by I.J. Fritz; M. Gottlieb; T.J. Isaacs; B. Morosin


Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
502 KB
Volume
42
Category
Article
ISSN
0022-3697

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Librational “soft” mode around the 240 K
✍ Zafar Iqbal; C.W. Christoe 📂 Article 📅 1974 🏛 Elsevier Science 🌐 English ⚖ 393 KB

The remarkable "softening" of a librational mode in thulium azide (TIN,) around its 240 K phase trz-nsition has been observed by Fkman spectroscopy. Arhn-r~onic coupling between this mode 2nd the rotational displacerr,ent parameter of the transition is proposed in terms of the theoretical model of C