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Anomalies in low-temperature lattice parameters of ErFeO3 and ErAlO3 single crystals: correlation with magnetic properties |
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| Authors: | Andrzej Bombik Joachim Kusz Barbara M Wanklyn |
| Institution: | a Faculty of Physics and Nuclear Techniques, AGH-University of Science and Technology, ul. W?adys?awa Reymonta 19, 30-059 Kraków, Poland b Institut für Geowissenschaften, Johannes Gutenberg-Universität Mainz, Johann Joachim Becher Weg 21, 550099 Mainz, Germany c Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland d The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, ul. Walerego Eljasza Radzikowskiego 152, 31-342 Kraków, Poland e Clarendon Laboratory, Oxford, UK |
| Abstract: | The paper presents the results of an experimental study of thermal expansion of isostructural orthorhombic ErFeO3 and ErAlO3 single crystals. Changes of lattice parameters have been investigated by X-ray measurements in the 10-300 K temperature range. Above ∼150 K, experimental results correspond well to the phonon mechanism. At low temperatures distinct anisotropic anomalies were observed in both compounds; and a correlation with the magnetic properties of the relevant ions is noted. |
| Keywords: | 61 10 Nz 65 70 +y 75 30 Gw 75 40 Cx 75 80 +q |
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