Infrared-active phonons of LaMnO3 and CaMnO3

被引：87

作者：

Fedorov, I

Lorenzana, J

Dore, P

De Marzi, G

Maselli, P

Calvani, P

Cheong, SW

Koval, S

Migoni, R

机构：

[1] Univ Roma La Sapienza, Dipartimento Fis, Ist Nazl Fis Mat, I-00185 Rome, Italy

[2] Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USA

[3] Rutgers State Univ, Dept Phys, Piscataway, NJ 08855 USA

[4] Univ Nacl Rosario, Inst Fis Rosario, RA-2000 Rosario, Santa Fe, Argentina

[5] Consejo Nacl Invest Cient & Tecn, Ctr Atom Bariloche, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

[6] Inst Balseiro, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

来源：

PHYSICAL REVIEW B | 1999年 / 60卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.60.11875

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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. [S0163-1829(99)09441-2].

引用

页码：11875 / 11878

页数：4

共 18 条

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