IR characterization of Ln2-xSrxCoO4 (x≥1; Ln=La, Nd) oxides

[摘要] We have recorded the FTIR spectra of powder samples of Ln(2-x)Sr(x)CoO(4) (Ln=La, Nd) at room temperature. We have identified the infrared active modes (3A(2u) + 4E(u)), and analyzed how they change as a function of Ln and the Sr doping. We correlate the obtained results with structural data obtained from powder X-ray diffraction studies and with the electronic properties displayed by these samples. (C) 2001 Elsevier Science B.V. All rights reserved.

[发布日期] 2001-07-12

[效力级别]  Proceedings Paper

[关键词] magnetically ordered materials;chemical synthesis;crystal structure and symmetry;phonons;light absorption and reflection