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

doi:10.1143/APEX.1.113001

Magneto-optical characterization on the ferromagnetic-paramagnetic transitions in the composition-spread epitaxial film of Sr_1-xCa _xRuO₃

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

Research output: Contribution to journal › Article › peer-review

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Abstract

The composition-spread epitaxial thin film of Sr_1-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 language	English
Pages (from-to)	1130011-1130013
Number of pages	3
Journal	Applied Physics Express
Volume	1
Issue number	11
DOIs	https://doi.org/10.1143/APEX.1.113001
Publication status	Published - 2008 Nov
Externally published	Yes

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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

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.",

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year = "2008",

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doi = "10.1143/APEX.1.113001",

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AU - Hosaka, Noriko

AU - Yamada, Hiroyuki

AU - Shimada, Yoshiaki

AU - Fujioka, Jun

AU - Bordées, Sándor

AU - Kézsmárki, István

AU - Kawasaki, Masashi

AU - Tokura, Yoshlnori

PY - 2008/11

Y1 - 2008/11

N2 - 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.

AB - 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.

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Magneto-optical characterization on the ferromagnetic-paramagnetic transitions in the composition-spread epitaxial film of Sr_1-xCa _xRuO₃

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