Low-temperature structural phase transition in SrMo6S8studied by X-ray powder diffraction
β Scribed by Brigitte Koppelhuber-Bitschnau; Franz A. Mautner; Klaus Yvon
- Publisher
- Springer Vienna
- Year
- 1990
- Tongue
- English
- Weight
- 258 KB
- Volume
- 121
- Category
- Article
- ISSN
- 0026-9247
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Ca 2 Fe 2 O 5 shows a first-order phase transition from space group Pnma to a modulated structure described in superspace group ImmaΓ°00gΓs00. The transition starts at 947 K during heating and the reverse transition in cooling conditions starts at 923 K, as determined from differential thermal analys
Two parameters for measuring the structural strain, the effective Debye-Waller parameter, Beff, and lattice strain, c, were evaluated on a natural pyrite (FeS2) after grinding. The effective Debye-Waller parameter, Beff, which depends on the displacement of atoms in the crystal, was calculated for t