Magneto-optical characterization on the ferromagnetic-paramagnetic transitions in the composition-spread epitaxial film of Sr1-xCa xRuO3

Noriko Hosaka, Hiroyuki Yamada, Yoshiaki Shimada, Jun Fujioka, Sándor Bordées, István Kézsmárki, Masashi Kawasaki, Yoshlnori Tokura

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The composition-spread epitaxial thin film of Sr1-xCa xRuO3 (0.13 ≤ x ≤ 0.53) was synthesized by the pulsed laser deposition technique and its x-dependent magnetic properties were probed by the magneto-optical (MO) Kerr spectroscopy. The MO spectra in the energy region of the charge-transfer excitation (O 2p to Ru 4d) are observed to change their spectral intensity critically depending on temperature (T) and x while preserving the spectral shape. The contour mapping of the MO intensity in the x-T plane clarifies the continuous ferromagnetic-to-paramagnetic phase change with increase of not only T but also x, revealing the quantum-critical point around x = 0.5.

Original languageEnglish
Pages (from-to)1130011-1130013
Number of pages3
JournalApplied Physics Express
Volume1
Issue number11
DOIs
Publication statusPublished - 2008 Nov
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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