Infrared-active phonons of LaMnO3 and CaMnO3

I. Fedorov; J. Lorenzana; P. Dore; G. De Marzi; P. Maselli; P. Calvani; S. W. Cheong; S. Koval; R. Migoni

doi:10.1103/PhysRevB.60.11875

Infrared-active phonons of LaMnO₃ and CaMnO₃

I. Fedorov, J. Lorenzana, P. Dore, G. De Marzi, P. Maselli, P. Calvani, S. W. Cheong, S. Koval, R. Migoni

School of Arts and Sciences, New High Energy Theory Center

Research output: Contribution to journal › Article › peer-review

85 Scopus citations

Abstract

The infrared absorption spectra of polycrystalline LaMnO₃ and CaMnO₃ measured in the frequency range of the transverse optical phonons are reported, discussed, and compared with calculations of the lattice dynamics. For LaMnO₃ the measured spectrum is consistent with the expected orthorhombic structure. For CaMnO₃ the spectrum reflects a symmetry lower than that of a cubic perovskite. We find a close correspondence between the spectra of the two materials which suggests a similarity in their structures.

Original language	English (US)
Pages (from-to)	11875-11878
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	60
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevB.60.11875
State	Published - 1999

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.60.11875

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abstract = "The infrared absorption spectra of polycrystalline LaMnO3 and CaMnO3 measured in the frequency range of the transverse optical phonons are reported, discussed, and compared with calculations of the lattice dynamics. For LaMnO3 the measured spectrum is consistent with the expected orthorhombic structure. For CaMnO3 the spectrum reflects a symmetry lower than that of a cubic perovskite. We find a close correspondence between the spectra of the two materials which suggests a similarity in their structures.",

author = "I. Fedorov and J. Lorenzana and P. Dore and {De Marzi}, G. and P. Maselli and P. Calvani and Cheong, {S. W.} and S. Koval and R. Migoni",

year = "1999",

doi = "10.1103/PhysRevB.60.11875",

language = "English (US)",

volume = "60",

pages = "11875--11878",

journal = "Physical Review B - Condensed Matter and Materials Physics",

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T1 - Infrared-active phonons of LaMnO3 and CaMnO3

AU - Fedorov, I.

AU - Lorenzana, J.

AU - Dore, P.

AU - De Marzi, G.

AU - Maselli, P.

AU - Calvani, P.

AU - Cheong, S. W.

AU - Koval, S.

AU - Migoni, R.

PY - 1999

Y1 - 1999

N2 - The infrared absorption spectra of polycrystalline LaMnO3 and CaMnO3 measured in the frequency range of the transverse optical phonons are reported, discussed, and compared with calculations of the lattice dynamics. For LaMnO3 the measured spectrum is consistent with the expected orthorhombic structure. For CaMnO3 the spectrum reflects a symmetry lower than that of a cubic perovskite. We find a close correspondence between the spectra of the two materials which suggests a similarity in their structures.

AB - The infrared absorption spectra of polycrystalline LaMnO3 and CaMnO3 measured in the frequency range of the transverse optical phonons are reported, discussed, and compared with calculations of the lattice dynamics. For LaMnO3 the measured spectrum is consistent with the expected orthorhombic structure. For CaMnO3 the spectrum reflects a symmetry lower than that of a cubic perovskite. We find a close correspondence between the spectra of the two materials which suggests a similarity in their structures.

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U2 - 10.1103/PhysRevB.60.11875

DO - 10.1103/PhysRevB.60.11875

M3 - Article

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SN - 1098-0121

VL - 60

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EP - 11878

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 17

ER -

Infrared-active phonons of LaMnO₃ and CaMnO₃

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