Published September 2007
| Version v1
Journal article
Local moments, exchange interactions, and magnetic order in Mn-doped LaFe2Si2 alloys
- 1. Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Charles University, Ke Karlovu 5, 12116 Prague 2 (Czech Republic) and Institute of Physics of Materials, Academy of Sciences of the Czech Republic, Zizkova 22, 61662 Brno (Czech Republic)
- 2. Faculty of Mathematics and Physics, Department of Condensed Matter Physics, Charles University, Ke Karlovu 5, 12116 Prague 2 (Czech Republic)
- 3. Faculty of Natural Sciences, Department of Inorganic Chemistry, Charles University, Albertov 2030, 12840 Prague 2 (Czech Republic)
Description
Formation of local magnetic moments in the intermetallic compound LaFe2Si2 due to doping by a few at% of Mn has been investigated by theoretical and experimental tools. While a number of low-temperature experiments prove appearance of non-zero magnetic moments due to the Mn doping, the measured 57Fe Moessbauer spectra rule out sizable local moments of Fe atoms. This conclusion is in agreement with results of first-principles electronic structure calculations that yield non-vanishing moments only on Mn atoms. The calculated Mn-Mn exchange interactions are of both signs which indicate a magnetically frustrated ground state, probably with a spin-glass-like arrangement of the Mn moments
Additional details
Identifiers
- DOI
- 10.1016/j.jmmm.2007.04.026;
- PII
- S0304-8853(07)00647-6;
Publishing Information
- Journal Title
- Journal of Magnetism and Magnetic Materials
- Journal Volume
- 316
- Journal Issue
- 2
- Journal Page Range
- p. e403-e406
- ISSN
- 0304-8853
- CODEN
- JMMMDC
Conference
- Title
- Joint European magnetic symposia
- Dates
- 26-30 Jun 2006
- Place
- San Sebastian (Spain)
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39033057
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- DENSITY FUNCTIONAL METHOD; DOPED MATERIALS; ELECTRONIC STRUCTURE; EXCHANGE INTERACTIONS; GROUND STATES; INTERMETALLIC COMPOUNDS; IRON ALLOYS; LANTHANUM ALLOYS; MAGNETIC MOMENTS; MOESSBAUER EFFECT; SILICON ALLOYS; SPIN GLASS STATE
- Descriptors DEC
- ALLOYS; CALCULATION METHODS; ENERGY LEVELS; INTERACTIONS; MATERIALS; RARE EARTH ALLOYS; TRANSITION ELEMENT ALLOYS; VARIATIONAL METHODS
Optional Information
- Copyright
- Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.