mu(+)-SR studies of the weak ferromagnets CoCO3 and NiCO3
| Autor: | Tom Lancaster, M. Kurmoo, F. L. Pratt, Stephen J. Blundell |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics
Condensed matter physics Field (physics) Trigonal crystal system Condensed Matter Physics Electronic Optical and Magnetic Materials Condensed Matter::Materials Science Paramagnetism Magnetization Ferromagnetism Superexchange Condensed Matter::Strongly Correlated Electrons Electrical and Electronic Engineering Anisotropy Spontaneous magnetization |
| DOI: | 10.1016/s0921-4526(02)01681-2 |
| Popis: | We present the results of zero-held mu(+)-SR measurements on CoCO3 and NiCO3. Both compounds are rhombohedral antiferromagnets which exhibit a spontaneous weak magnetisation below 22.2 and 17.2 K, respectively. This arises due to an anisotropic superexchange (Dzyaloshinsky-Moriya) interaction. We have studied the temperature dependence of the internal field in the ordered state and the magnetic fluctuations in the paramagnetic state. We describe the possible muon-site obtained from dipolar-field calculations. (C) 2002 Elsevier Science B.V. All rights reserved. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|