Details

Autor(en) / Beteiligte

• Yamada, Keisuke
• Kogiso, Kazuma
• Shiota, Yoichi
• Yamamoto, Mikiya
• Yamaguchi, Akinobu
• Moriyama, Takahiro
• Ono, Teruo
• Shima, Mutsuhiro

Titel

Dependence of Gilbert damping constant on microstructure in nanocrystalline YIG coatings prepared by co-precipitation and spin-coating on a Si substrate

Ist Teil von

• Journal of magnetism and magnetic materials, 2020-11, Vol.513, p.167253, Article 167253

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2020

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •Chemically prepared nanocrystalline YIG coatings on a Si substrate.•Increase of particle size and Gilbert damping constant of YIG crystals with increasing annealing temperature.•Variation of Gilbert damping constant attributed to the microstructural evolution of YIG coatings. This paper reports on dependence of the Gilbert damping constant α on the microstructure in nanocrystalline Y3Fe5O12 (YIG) coatings fabricated on a Si substrate by a sequence of co-precipitation, spin-coating, and annealing processes. When the annealing temperature Ta increases from 1023 K to 1323 K, the average particle size of the YIG crystals estimated by scanning electron microscopy increases from 64 nm to 217 nm, and the value of α also increases from 2.7 × 10−2 to 1.2 × 10−1. The observed increase of α is attributed to the microstructural evolution in the nanocrystalline YIG coatings upon annealing.