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DC Field | Value | Language |
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dc.contributor.author | Hidaka, M. | en_US |
dc.contributor.author | Tokiwa, N. | en_US |
dc.contributor.author | Wijesundera, R.P. | en_US |
dc.contributor.author | Awaka, J. | en_US |
dc.contributor.author | Nagata, S. | en_US |
dc.contributor.author | Park, Y.J. | en_US |
dc.contributor.author | Lee, K.B. | |
dc.date.accessioned | 2014-11-19T04:45:13Z | |
dc.date.available | 2014-11-19T04:45:13Z | |
dc.date.issued | 2007 | |
dc.identifier.citation | M Hidaka, N Tokiwa, RP Wijesundera, J Awaka, S Nagata, Young Jun Park, Ki Bong Lee, 2007, Order-disorder transistion of t2g-orbitals of V3+ ions and incommensurate structural deformations in the metallic spinel CuV2S4, Physica Status of Solidi (b), 244 (7), pp. 2565-2575 | |
dc.identifier.uri | ||
dc.identifier.uri | http://repository.kln.ac.lk/handle/123456789/4043 | |
dc.description.abstract | Structural transitions of the spinel CuV2S4 have been studied by means of X-ray diffraction using synchrotron radiation. The temperature dependence of reflections forbidden in a cubic spinel structure of Fd3m suggests that there are order?disorder transitions of 3d2 (t2g) orbitals of V3+ ions at about 75 and 210 K. An incommensurate superlattice reflection of (2+3/4, 2, 2+3/4) shows the structural phase transition occurring at about 90 K, in addition to the superlattice structural modulation at about 30?35 and 55 K. A reduced wavevector q = (3/4??, 0, 3/4??) shows the temperature dependence of the ? value from 0.015 to ?0.025. A lock-in of ? = 0.0 and a crossover of the ? value occur in the region of 40 to 50 K. The incommensurate structural modulation along [110], [011], and [101] directions appearing below about 90 K affects a paramagnetic spin order of V3+ ions at about 30?35 and 55 K, in addition to the 90 K structural transition. The paramagnetic behavior is interpreted mainly by the structural deformation and the (dxy, dyz, dzx) orbitals in the VS6 octahedral chains sited along [110], [011], and [101] directions. | en_US |
dc.publisher | Physica Status Solidi b (basic solid state physics) | en_US |
dc.title | Order-disorder transitions of t2g-orbitals of V3+ ions and incommensurate structural deformations in the metallic spinel CuV2S4 | |
dc.type | article | en_US |
dc.identifier.department | Physics | en_US |
Appears in Collections: | Physics |
Files in This Item:
File | Description | Size | Format | |
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Annex 14.docx | 257.11 kB | Microsoft Word XML | View/Open |
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