Invar effect in n-Nb{sub 2}O{sub 5}, {alpha}{sub ht}-Nb{sub 2}O{sub 5}, and L-Nb{sub 2}O{sub 5}
Journal Article
·
· Crystallography Reports
- Southern Federal University, Research Institute of Physics (Russian Federation)
An X-ray diffraction analysis of two commercial sets of niobium pentaoxide (Nb{sub 2}O{sub 5}) of Nbo-Pt grade has been performed. Each set reveals the coexistence of three modifications: n-Nb{sub 2}O{sub 5}, {alpha}{sub ht}-Nb{sub 2}O{sub 5}, and L-Nb{sub 2}O{sub 5}. Anomalous behavior in the structural characteristics, with the occurrence of plateaus upon heating (the invar effect), is established for each phase. It is suggested that the coincidence of the temperature ranges with constant unit-cell parameters in Nb{sub 2}O{sub 5} and complex Nb-containing oxides indicates the unified nature of the invar effect, which is related to the defect state of objects under study.
- OSTI ID:
- 22050830
- Journal Information:
- Crystallography Reports, Vol. 54, Issue 3; Other Information: Copyright (c) 2009 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7745
- Country of Publication:
- United States
- Language:
- English
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