Published January 1, 2005 | Version v1
Journal article Metadata-only

Temperature dependence of FMR spectrum of Fe3C magnetic agglomerates

Creators

  • 1. Solid State Section, Department of Physics, University of Athens, Panepistimiopolis, 15 784 Zografos, Athens (Greece)
  • 2. Institute of Physics, Technical University of Szczecin, Al. Piastow 17, 70-310 Szczecin (Poland)
  • 3. Institute of Chemical and Environment Engineering, Technical University of Szczecin, Al. Piastow 17, 70-310 Szczecin (Poland)

Description

The sample of iron carbide has been prepared using carburisation of iron with ethylene/hydrogen mixture. After carburisation, the sample was characterized by using XRD and scanning electron microscopy. XRD revealed the presence of cementite phase only. The mean size of cementite crystallites was determined to be 46 nm. The FMR absorption signals have been investigated in the temperature range from liquid helium up to room temperature. The asymmetric, very broad and intense FMR line was registered and decomposed in two Lorentzian-shape components (low- and high-field). The main high-field component shifts toward low magnetic fields with decreasing temperature. At 75 K a phase transition was observed due to the freezing of the non-magnetic matrix. Additionally, the spin glass state was recorded below 30 K

Availability note (English)

Available online at http://stacks.iop.org/1742-6596/10/151/jpconf5_10_037.pdf or at the Web site for the Journal of Physics. Conference Series (Online) (ISSN 1742-6596) http://www.iop.org/

Additional details

Identifiers

URL
http://stacks.iop.org/1742-6596/10/151/jpconf5_10_037.pdf; http://www.iop.org/;
DOI
10.1088/1742-6596/10/1/037;

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
10
Journal Issue
1
Journal Page Range
p. 151-154
ISSN
1742-6596

Conference

Title
2. conference on microelectronics, microsystems and nanotechnology
Dates
14-17 Nov 2004
Place
Athens (Greece)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36107939
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ABSORPTION; ASYMMETRY; CEMENTITE; ETHYLENE; FERROMAGNETIC RESONANCE; FREEZING; HELIUM; HYDROGEN; IRON; LIQUIDS; MAGNETIC FIELDS; MIXTURES; SCANNING ELECTRON MICROSCOPY; SIGNALS; SPECTRA; SPIN GLASS STATE; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0013-0065 K; TEMPERATURE RANGE 0273-0400 K; X-RAY DIFFRACTION
Descriptors DEC
ALKENES; ALLOYS; CARBIDES; CARBON COMPOUNDS; COHERENT SCATTERING; DIFFRACTION; DISPERSIONS; ELECTRON MICROSCOPY; ELEMENTS; FLUIDS; GASES; HYDROCARBONS; INTERMETALLIC COMPOUNDS; IRON CARBIDES; IRON COMPOUNDS; MAGNETIC RESONANCE; METALS; MICROSCOPY; NONMETALS; ORGANIC COMPOUNDS; PHASE TRANSFORMATIONS; RARE GASES; RESONANCE; SCATTERING; SORPTION; TEMPERATURE RANGE; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS