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Excellent Crystallinity of Ba Ferrite Layers Deposited on Pt(111) Underlayers
Matsushita, Nobuhiro,Feng, Jie,Watanabe, Koh,Ichinose, Makoto,Nakagawa, Shigeki,Naoe, Masahiko The Korean Ceramic Society 2000 The Korean journal of ceramics Vol.6 No.3
A magnetoplumbite type of Ba ferrite(BaM) layers were deposited on Pt(111) and Pt(200) layers, and their c-axis orientation and magnetic characteristics were compared each other. The as-deposited BaM layer on Pt(111) one at the substrate temperature $T_s$ above $500^{\circ}C$ revealed remarkable c-axis orientation. The saturation magnetization 4$\piM_s$ and the perpendicular coercivity $H_{c⊥}$ of the films as-deposited at $T_s$ of $600^{\circ}C$ were 4.0kG and 2.5kOe, respectively. On the other hand, BaM ferrite layer deposited on Pt(200) layer at $T_s$ as relatively low as $500^{\circ}C$ also revealed weak c-axis orientation as well as (107) one and the films as-deposited at $T_s$ of $600^{\circ}C$ exhibited 4$\piMs_{and}$ $H_{c⊥}$ of 2.8kG and 2.5kOe, respectively. It was suggested that although chemical activity of Pt surface was effective for the formation of BaM crystallites, the lattice matching was also important for obtaining BaM layer with good c-axis orientation and large perpendicular anisotropy.sotropy.
스핀 스프레이법으로 PC 기판에 제작한 산화아연 박막의 특성
홍정수,Nobuhiro Matsushita,Ken-ichi Katsumata,박용서,김경환 한국반도체디스플레이기술학회 2018 반도체디스플레이기술학회지 Vol.17 No.3
In this study, ZnO film was deposited on polycarbonate substrate by spin-spray method at low substrate temperature of 85oC. Surface morphology of ZnO films was changed by adding citrate from rod to dense structure. As-deposited ZnO film indicated high transmittance above 80%. In case of the resistivity, as-deposited ZnO film had high resistivity due to the existence of organic substance in the film. However, organic substance was removed and resistivity was decreased to 3.9 x 10-2 Ω·cm, after UV irradiation.