Details

Autor(en) / Beteiligte

• Hirata, Satoshi
• Ono, Tatsuyoshi
• Amemiya, Yoshiteru
• Tabei, Tetsuo
• Yokoyama, Shin

Titel

Influence of surface smoothing on spin Seebeck effect of Ce1Y2Fe5O12 deposited by metal organic decomposition

Ist Teil von

• Japanese Journal of Applied Physics, 2017-04, Vol.56 (4S)

Ort / Verlag

The Japan Society of Applied Physics

Erscheinungsjahr

2017

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Thus far, Bi1Y2Fe5O12 (Bi:YIG) films deposited by metal organic decomposition (MOD) are mainly used for magnetic insulation film of spin Seebeck devices. In order to increase the power conversion efficiency of these devices, we focused on Ce1Y2Fe5O12 (Ce:YIG), which has a larger Faraday rotation than Bi:YIG. Since there has been no report, except for the patent document, concerning the deposition of Ce:YIG films by MOD, we investigated the appropriate annealing temperatures, and we found that Ce:YIG films are crystallized when the annealing temperature is over 800 °C. However, since no electromotive force has been observed, we checked the surface roughness of Ce:YIG films by atomic force microscopy (AFM). Since their surfaces of Ce:YIG films were very rough, it was mechanically polished (MP). Then, an electromotive force of, at most, 11.3 µV was generated. This is the first report concerning the spin Seebeck effect of Ce:YIG deposited by MOD.