Optical investigation of metamagnetic DyAlO3 |
| |
Authors: | H Schuchert S Hüfner R Faulhaber |
| |
Institution: | 1. Institut für Technische Physik, Technische Hochschule, Darmstadt
|
| |
Abstract: | We have investigated the optical absorption spectra of metamagnetic DyAlO3 (T N =3.4 °K) above and below the Néel temperature. We find that the magnetic interactions are predominantly between the ions along the crystallographicc-axis; the interaction energy between two ions isW C =? (2.9±0.6) cm?1. Additional line-shifts below 3.4 °K yield the Néel temperature. Zeeman effect studies give the magnetic moment of the groundstate as μ=(9.2 ± 0.9)μ B . The direction of the magnetic moments is in thea-b plane, with angles of ± 33.5° and ± 146.5° from theb-axis. The Zeeman effect studies reveal two metamagnetic transitions (forH ext∥μ) at 7.0 and 7.3 kOe respectively. Additional susceptibility and Mössbauer measurements confirm the Néel temperature and the magnetic moment. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |