|
|||||
|
|
The static and dynamic lattice effects in La1−xCaxMnO3 |
|
| Authors: | P. Dai Jiandi Zhang H.A. Mook F. Foong S.-H. Liou P.A. Dowben E.W. Plummer |
| Affiliation: | a Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, U.S.A. b Department of Physics, University of Tennessee, Knoxville, Tennessee 37996, U.S.A. c Department of Physics, University of Nebraska, Lincoln, Nebraska 68588-0111, U.S.A. |
| Abstract: | The structural and magnetic behavior of the perovskite insulator La0.9Ca0.1MnO3 were studied as a function of temperature from 15 to 300 K by neutron powder diffraction. Although this compound shows an anomalous response of the lattice parameters around Tc (150 K), the behavior of the oxygen/manganese Debye-Waller factors is in clear contrast to its “colossal magnetoresistance” (CMR) counterpart La0.65Ca0.35MnO3. We speculate that the difference is intimately associated with the metal-insulator transition in the latter compound. |
| Keywords: | A. magnetically ordered materials D. electron-phonon interactions E. neutron scattering |
| 本文献已被 ScienceDirect 等数据库收录！ | |