Hyperfine interactions on iron in R2-xFe14+2xSi3 (R = Ce, Nd, Gd, Dy, Ho, Er, Lu, Y) compounds studied by Moessbauer spectroscopy
Creators
- 1. Moessbauer Spectroscopy Division, Institute of Physics, Pedagogical University, PL-30-084 Krakow, ul. Podchorazych 2 (Poland)
- 2. Solid State Physics Department, Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, PL-30-059 Krakow, Al. Mickiewicza 30 (Poland)
- 3. Surface Physics Division, Institute of Physics, Pedagogical University, PL-30-084 Krakow, ul. Podchorazych 2 (Poland)
- 4. Institute of Physics, Academy of Sciences, Na Slovance 2, 18221 Prague (Czech Republic)
Description
Compounds R2-xFe14+2xSi3 with (R = Ce, Nd, Gd, Dy, Ho, Er, Lu, Y) were prepared by the modified Czochralski method and investigated by means of the 57Fe 14.4 keV Moessbauer spectroscopy and powder X-ray diffraction. The magnetic moment was additionally measured for samples being single crystals. Iron experiencing low magnetic hyperfine field and electric quadrupole interaction was found on (4e) sites in the P63/mmc structure. Similar iron was found in the R3-bar m structure as well. The non-stoichiometry parameter was determined as being close to 2x = 0.5 for all compounds investigated. Compound with R = Ho crystallizes in both structures. Our results show that silicon avoids (4f) and (6g) sites for compounds with the P63/mmc structure (R = Dy, Ho, Er, Lu, Y), whereas it avoids (6c) and (9d) sites for those with R3-bar m structure (R = Nd, Gd, Ho)
Availability note (English)
Available from http://dx.doi.org/10.1016/j.jallcom.2007.11.080Additional details
Identifiers
- DOI
- 10.1016/j.jallcom.2007.11.080;
- PII
- S0925-8388(07)02222-0;
Publishing Information
- Journal Title
- Journal of Alloys and Compounds
- Journal Volume
- 466
- Journal Issue
- 1-2
- Journal Page Range
- p. 45-51
- ISSN
- 0925-8388
- CODEN
- JALCEU
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40016929
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- CERIUM ALLOYS; CZOCHRALSKI METHOD; DYSPROSIUM ALLOYS; ERBIUM ALLOYS; EUROPIUM ALLOYS; GADOLINIUM ALLOYS; HCP LATTICES; INTERMETALLIC COMPOUNDS; IRON; IRON ALLOYS; LUTETIUM ALLOYS; MAGNETIC MOMENTS; MAGNETISM; MOESSBAUER EFFECT; NEODYMIUM ALLOYS; SILICON ALLOYS; X-RAY DIFFRACTION; YTTRIUM ALLOYS
- Descriptors DEC
- ALLOYS; COHERENT SCATTERING; CRYSTAL GROWTH METHODS; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DIFFRACTION; ELEMENTS; HEXAGONAL LATTICES; METALS; RARE EARTH ALLOYS; SCATTERING; TRANSITION ELEMENT ALLOYS; TRANSITION ELEMENTS
Optional Information
- Copyright
- Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.