Assignment of lattice vibrations of lithium jodate from IR, Raman and NQR data

Baisa, D. F.; Barabash, A.I.; Pogrebnyak, S. V.; Puchkovskaya, G. A.; Frolkov, Yu. A.

doi:10.1016/0375-9601(73)90417-9

Cited by 4 publications

(3 citation statements)

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“…Note that q zz is defined by contributions from the covalent bonds of the ion and from the point charges of the lattice ions q i zz [12]. It was shown [2,13] that the temperature dependence of the NQR frequency in the case of zero EFGT asymmetry parameter and if q i zz contribution from the point charges can be neglected and this may be used to interpret long wave low-frequency phonon spectra of crystals. The vibrations with frequencies not exceeding 200 cm -1 are the most efficient in averaging q zz .…”

Section: Resultsmentioning

confidence: 99%

“…The temperature coefficients of the NQR spectrum parameters are highly sensitive to changes in the crystal dynamic parameters (amplitudes, frequencies) [1,2]. The urgency of studies of solid solutions of layered semiconductor crystals (BiI 3 ) (1-х) (PbI 2 ) х and Pb 1-х Cd x I 2 is first of all associated with the possibility of formation of cluster structures in these crystals, which significantly affects their properties.…”

Section: Introductionmentioning

confidence: 99%

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I127 NQR spectra of Pb1–xCdxI2 and (BiI3)(1–x)(PbI2)x of mixed layered semiconductors

Vertegel¹

2017

Semicond. Phys. Quantum Electron. Optoelectron.

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Abstract. The results of studying the concentration and temperature dependences of NQR spectrum parameters inherent to I 127 in mixed layered semiconductors Pb x-1 Cd x I 2 and (BiI 3 ) (1-x) (PbI 2 ) x are presented for x ≤ 0.30 and T = 77…150 K. It has been shown that, for the low content x ≤ 0.08 PbI 2 for (BiI 3 ) (1-x) (PbI 2 ) x and x ≤ 0.02 CdI 2 for Pb 1-х Cd x I 2 , the temperature coefficients of NQR frequency don't undergo significant changes, which is indicative of conservation of the quasi-two-dimensional nature of the vibration states. The possibility to form nanoclusters of PbI 2 and CdI 2 as well as their influence on the parameters of the NQR spectra has been discussed.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

I127 NQR spectra of Pb1–xCdxI2 and (BiI3)(1–x)(PbI2)x of mixed layered semiconductors

Vertegel¹

2017

Semicond. Phys. Quantum Electron. Optoelectron.

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“…The bending vibrations of the 10, group are mixed with the external vibration^.^ Assignments of the external modes of the 10,-were made by comparison with those of LiIO, . 7 The non-degenerate v2 mode is found to give two bands and this is due to a correlation field effect.…”

Section: Resultsmentioning

confidence: 99%

IR and polarized Raman spectra of KIO₃ · Te(OH)₆

Santha

Nayar

1990

J Raman Spectroscopy

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Raman and infrared spectra of NH₄H₂(IO₃)₃ and KH₂(IO₃)₃

Santha

Isaac

Nayar

et al. 1991

J Raman Spectroscopy

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Raman and infrared spectra of NH,HZ(I0,), and KH,(I03), were recorded and analysed. The observed splitting!? of the stretching modes of 10, -are due to the distortion of the 10, octahedra. In NH,H,(IO,), , the ammonium ion can rotate freely and the NH,' group forms only weak hydrogen bonds with the oxygen atom. Owing to Fermi resonance, three stretching bands are observed for the OH vibration in both compounds. The hydrogen bonds are slightly shorter in KH,(I03), than in NH,H,(IO,), .

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Assignment of lattice vibrations of lithium jodate from IR, Raman and NQR data

Cited by 4 publications

References 5 publications

I127 NQR spectra of Pb1–xCdxI2 and (BiI3)(1–x)(PbI2)x of mixed layered semiconductors

I127 NQR spectra of Pb1–xCdxI2 and (BiI3)(1–x)(PbI2)x of mixed layered semiconductors

IR and polarized Raman spectra of KIO₃ · Te(OH)₆

Raman and infrared spectra of NH₄H₂(IO₃)₃ and KH₂(IO₃)₃

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Assignment of lattice vibrations of lithium jodate from IR, Raman and NQR data

Cited by 4 publications

References 5 publications

I127 NQR spectra of Pb1–xCdxI2 and (BiI3)(1–x)(PbI2)x of mixed layered semiconductors

I127 NQR spectra of Pb1–xCdxI2 and (BiI3)(1–x)(PbI2)x of mixed layered semiconductors

IR and polarized Raman spectra of KIO3 · Te(OH)6

Raman and infrared spectra of NH4H2(IO3)3 and KH2(IO3)3

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IR and polarized Raman spectra of KIO₃ · Te(OH)₆

Raman and infrared spectra of NH₄H₂(IO₃)₃ and KH₂(IO₃)₃