High-pressure effects on the optical-absorption edge of CdIn2S4, MgIn2S4, and MnIn2S4 thiospinels

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dc.creatorRuiz-Fuertes, J.
dc.creatorErrandonea, D.
dc.creatorManjon, F. J.
dc.creatorMartinez-Garcia, D.
dc.creatorSegura, A.
dc.creatorUrsaki, V. V.
dc.creatorTiginyanu, I. M.
dc.date2007-11-23
dc.date.accessioned2026-07-07T09:41:45Z
dc.date.available2026-07-07T09:41:45Z
dc.descriptionThe effect of pressure on the optical-absorption edge of CdIn2S4, MgIn2S4, and MnIn2S4 thiospinels at room temperature is investigated up to 20 GPa. The pressure dependence of their band-gaps has been analyzed using the Urbach rule. We have found that, within the pressure-range of stability of the low-pressure spinel phase, the band-gap of CdIn2S4 and MgIn2S4 exhibits a linear blue-shift with pressure, whereas the band-gap of MnIn2S4 exhibits a pronounced non-linear shift. In addition, an abrupt decrease of the band-gap energies occurs in the three compounds at pressures of 10 GPa, 8.5 GPa, and 7.2 GPa, respectively. Beyond these pressures, the optical-absorption edge red-shifts upon compression for the three studied thiospinels. All these results are discussed in terms of the electronic structure of each compound and their reported structural changes.
dc.description18 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0711.3702
dc.identifierhttp://arxiv.org/abs/0711.3702
dc.identifierJ. Appl. Phys. 103, 063710 (2008)
dc.identifierdoi:10.1063/1.2887992
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/161941
dc.subjectMaterials Science
dc.titleHigh-pressure effects on the optical-absorption edge of CdIn2S4, MgIn2S4, and MnIn2S4 thiospinels
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