Effect of annealing on optical absorption of LaAlO3 at terahertz frequencies

Ken Ichi Nomura, Shimpei Okami, Xiaojun Xie, Maya Mizuno, Kaori Fukunaga, Yoshimichi Ohki

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    Absorption spectra of LaAlO3(100) single crystals were measured at frequencies from 1.0 to 3.5 THz. A new absorption peak appears at ̃3:0 THz after annealing at temperatures above 500 °C. Simultaneously, striped domains with widths ranging from about 20 to about 300 μm in the original samples completely disappeared. Since oxygen vacancies are assumed to play an important role in the formation of domains, the absorption peak at ̃3:0 THz seems to be related to oxygen vacancies

    Original languageEnglish
    Article number021502
    JournalJapanese Journal of Applied Physics
    Volume50
    Issue number2
    DOIs
    Publication statusPublished - 2011 Feb

    Fingerprint

    Oxygen vacancies
    Light absorption
    optical absorption
    Annealing
    annealing
    oxygen
    Absorption spectra
    Single crystals
    absorption spectra
    single crystals
    Temperature
    temperature

    ASJC Scopus subject areas

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

    Cite this

    Effect of annealing on optical absorption of LaAlO3 at terahertz frequencies. / Nomura, Ken Ichi; Okami, Shimpei; Xie, Xiaojun; Mizuno, Maya; Fukunaga, Kaori; Ohki, Yoshimichi.

    In: Japanese Journal of Applied Physics, Vol. 50, No. 2, 021502, 02.2011.

    Research output: Contribution to journalArticle

    Nomura, Ken Ichi ; Okami, Shimpei ; Xie, Xiaojun ; Mizuno, Maya ; Fukunaga, Kaori ; Ohki, Yoshimichi. / Effect of annealing on optical absorption of LaAlO3 at terahertz frequencies. In: Japanese Journal of Applied Physics. 2011 ; Vol. 50, No. 2.
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    AU - Ohki, Yoshimichi

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