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The crystalline structure of pyrochlores AIFeIIBIIIF6: A Mössbauer investigation

✍ Scribed by Y. Calagé; F. Varret

Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
225 KB
Volume
55
Category
Article
ISSN
0009-2614

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✦ Synopsis

The Mössbauer results wnceming the pyrochlores CsFeCrF6 and cSFew6 disagree wïth the prevïously reported cubic structure. Two different hyperfme pattems can be observed at any temperature, thus Ieadïng to the new assumptìon of a cationic Fe*M*orderïng associated with a Iower symmetry. PartïcuIar features of the Mössbauer study are discussed.

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Crystal Structure, Magnetic, and Mössbau
Crystal Structure, Magnetic, and Mössbauer Studies of Cu6Fe0.9V6O19: A Compound with Relaxation Effect
✍ L. Permer; Y. Laligant; G. Ferey; Y. Calage 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 294 KB

\(\mathrm{Cu}_{6} \mathrm{Fe}_{0.9} \mathrm{~V}_{6} \mathrm{O}_{19}\), grown by hydrothermal synthesis, crystallizes in the rhombohedral system, space group \(R \overline{3}\), with \(a=12.9399(8) \AA, c=7.1275(3) \AA(T=293 \mathrm{~K})\), and \(Z=3\). The structure is related to that of so-called \