Magnetic domain analysis by in-situ TEM observation of magnetic refrigerant La(Fe0.90Si0.10)13

N. Kawamoto, Yasukazu Murakami, D. Shindo, K. Fukamichi, S. Fujieda, A. Fujita

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The thermally induced first-order magnetic phase transition in a La(Fe0.90Si0.10)13 compound has been observed at the Curie temperature TC by using Lorentz microscopy in the Fresnel mode. On heating the specimen, the magnetic domains instantly disappeared at TC due to the nature of the first-order phase transition. The coexistence of the ferromagnetic and paramagnetic phases was observed at TC. The magnetic domain structure below TC was unchanged by repeating the thermal cycles. This fact implies that the phase transition during thermal cycles does not induce any lattice defects that degrade the magnetocaloric effect.

Original languageEnglish
Pages (from-to)2815-2817
Number of pages3
JournalJournal of Magnetism and Magnetic Materials
Volume310
Issue number2 SUPPL. PART 3
DOIs
Publication statusPublished - Mar 1 2007
Externally publishedYes

Fingerprint

Magnetic domains
refrigerants
Refrigerants
magnetic domains
Phase transitions
Transmission electron microscopy
transmission electron microscopy
Magnetocaloric effects
cycles
Crystal defects
Curie temperature
Microscopic examination
microscopy
Heating
heating
defects
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Magnetic domain analysis by in-situ TEM observation of magnetic refrigerant La(Fe0.90Si0.10)13. / Kawamoto, N.; Murakami, Yasukazu; Shindo, D.; Fukamichi, K.; Fujieda, S.; Fujita, A.

In: Journal of Magnetism and Magnetic Materials, Vol. 310, No. 2 SUPPL. PART 3, 01.03.2007, p. 2815-2817.

Research output: Contribution to journalArticle

Kawamoto, N. ; Murakami, Yasukazu ; Shindo, D. ; Fukamichi, K. ; Fujieda, S. ; Fujita, A. / Magnetic domain analysis by in-situ TEM observation of magnetic refrigerant La(Fe0.90Si0.10)13. In: Journal of Magnetism and Magnetic Materials. 2007 ; Vol. 310, No. 2 SUPPL. PART 3. pp. 2815-2817.
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