Magnetic circular dichroism determination of the effects of O2 and N2 annealing on single-crystal YIG(Si)
- 15 December 1975
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 27 (12), 700-701
- https://doi.org/10.1063/1.88353
Abstract
Single‐crystal YIG(Si), containing 0.12 Si4+ per formula unit, has been subjected to oxygen and nitrogen annealing and the effects investigated by measurements of magnetic circular dichroism and of the photomagnetic properties. The results support the view that both the dichroic and the photomagnetic centers are Fe2+ ions and that both cation and oxygen vacancies are present in the crystals. The Fe2+ content is increased and decreased in a reversible fashion, along with simultaneous opposite variations of the oxygen vacancies, up to a total variation of approximately 42% about the initial amount. These changes are correlated with changes in the photomagnetic properties.Keywords
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