In situ TEM observation of thermally-induced first-order magnetic transition in itinerant-electron metamagnetic La(Fe xSi 1-x) 13 compounds

Naoyuki Kawamoto, Yasukazu Murakami, Daisuke Shindo, Shun Fujieda, Asaya Fujita, Kazuaki Fukamichi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Defocus mode of Lorentz microscopy has revealed change in the magnetic microstructure with a first-order magnetic phase transition in La(Fe xSi 1-x) 13 compounds (0.86 ≤ x. ≤ 0.90). Upon heating specimens from the ferromagnetic phase to the paramagnetic phase, magnetic domains disappear instantaneously at the Curie temperature, concurrent with a substantial change in the volume. The observations are consistent with the feature of the first-order phase transition, which gives rise to extraordinary phenomena of these compounds such as large magnetocaloric effects.

Original languageEnglish
Pages (from-to)1764-1767
Number of pages4
JournalMaterials Transactions
Volume46
Issue number8
DOIs
Publication statusPublished - Aug 2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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