Photoinduced Disaccommodation Spectrum in Ca(0.001 mol)-doped Yttrium Iron Garnet

  1. Hisatake, K. 2
  2. Matsubara, I. 2
  3. Maeda, K. 2
  4. de Francisco, Carlos 1
  5. Munoz, Jose Maria 1
  6. Alejos, Oscar 1
  7. Hernandez, Pablo 1
  8. Torres, Carlos 1
  1. 1 Universidad de Valladolid
    info

    Universidad de Valladolid

    Valladolid, España

    ROR https://ror.org/01fvbaw18

  2. 2 Kanagawa Dental University
    info

    Kanagawa Dental University

    Yokosuka, Japón

    ROR https://ror.org/0514c4d93

Revista:
Journal of the Magnetics Society of Japan

ISSN: 1880-4004,  0285-0192

Año de publicación: 1999

Volumen: 23

Número: S_1_MORIS_99

Páginas: S1_107-110

Tipo: Artículo

DOI: 10.3379/JMSJMAG.23.S1_107 GOOGLE SCHOLAR lock_openAcceso abierto editor

Otras publicaciones en: Journal of the Magnetics Society of Japan

Resumen

A remarkable photoinduced disaccommodation (DA) of magnetic permeability μ is observed in yttrium iron garnet (YIG) single crystal with very low contents of Ca: these double peaks of DA are around 125 K(0.46eV) and 200 K (0.60 eV) with correlative onset of the irreversible decrease of real part of permeability μ'_ insensitive to demagnetization at lower temperature than 250K. In addition, we observed the lowest temperature peak of DA is strongly frequency dependent and at 1 kHz it is cancelled by the accommodation (A) phenomenon. For these observations, we propose that the pinning center may be due to a photoinduced structure change around oxygen defects.

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