1995
DOI: 10.1143/jpsj.64.142
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Lattice Dynamics of Inverse Spinel Structure Sulphides

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Cited by 8 publications
(7 citation statements)
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“…It is also found that the random occupancy of the octahedral site of inverse spinel compounds does not affect zone-centre phonon frequencies. In the previous lattice dynamical calculations for inverse spinel structure compounds done by Gupta et al [18], he found 24 infrared phonon modes which diers the number of infrared phonon modes (14 infrared modes) for the normal spinel structure compounds from group theoretical analysis but in present paper we have found 14 infrared phonon modes as found in the normal spinel structure compounds.…”
Section: Resultssupporting
confidence: 39%
See 1 more Smart Citation
“…It is also found that the random occupancy of the octahedral site of inverse spinel compounds does not affect zone-centre phonon frequencies. In the previous lattice dynamical calculations for inverse spinel structure compounds done by Gupta et al [18], he found 24 infrared phonon modes which diers the number of infrared phonon modes (14 infrared modes) for the normal spinel structure compounds from group theoretical analysis but in present paper we have found 14 infrared phonon modes as found in the normal spinel structure compounds.…”
Section: Resultssupporting
confidence: 39%
“…The lattice dynamical calculations for the inverse spinel structure compounds are scarce due to the complexity present in their crystalline structure. Gupta and Balram [18] has calculated the zone-centre phonon frequencies of inverse spinel compounds using an angular force constant model (SRM). They have assumed that the third neighbour interaction is average of the interatomic interaction for the sulphide spinels [19,20] having normal spinel structure and is xed for all the inverse spinels.…”
Section: Introductionmentioning
confidence: 99%
“…The Raman line at 245 cm À1 in MnIn 2 S 4 is attributed to the E g mode as assumed by Gupta and Balram [32] in their theoretical analysis. The position of this line is also close to the position of the E g mode in FeIn 2 S 4 (253 cm À1 ) [33].…”
Section: Resultsmentioning
confidence: 70%
“…Nevertheless, and taking into account the theoretical calculations reported in Ref. [32] and the similar frequency value of the E g mode in FeIn 2 S 4 as reported in Ref. [33], in this paper we assume that the Raman line at 245 cm À1 in MnIn 2 S 4 is assigned to the E g mode, while the mode at 180 cm À1 which was previously assigned to the E g mode [24] is attributed to the activation of a Raman inactive F 1u mode.…”
Section: Resultsmentioning
confidence: 99%
“…The simple force constant models are widely used in studying the phonons in spinel type oxides, sulphides and selenides [5,6]. Lattice dynamic calculations of inverse spinels had been performed in [7]. The phonons in superconducting oxide spinel LiTi 2 O 4 were also investigated using three short-range force constants α 1 , α 2 , α 3 by Gupta et al [8].…”
Section: Introductionmentioning
confidence: 99%