Y98-61403-224 9907157具有钙钛矿相关结构的氧化物材料的电子跳动载流子迁移率和热电特性=Hopping carrier mobilites and ther-moelectric properties of oxide materials with perovskite-related structure[会,英]/Ohtaki,M.& T...Y98-61403-224 9907157具有钙钛矿相关结构的氧化物材料的电子跳动载流子迁移率和热电特性=Hopping carrier mobilites and ther-moelectric properties of oxide materials with perovskite-related structure[会,英]/Ohtaki,M.& Tokunaga,T.//1997 16th International Conference on Thermo-electrics.—224～227（G）本文研究了钙钛矿（即正铁氧化）型氧化物的热电特性,特别是电子跳动载流子迁移率。主要分析了基于 CaMnO<sub>3</sub>的氧化物的载流子迁移率;利用电子跳动传导机理研究了该材料的热电特性;还给出了室温下该材料的电导率、塞贝克系数和功率因数同温度的关系曲线等。展开更多
We review our works that focus on the microwave magnetic properties of metallic, ferrite and granular thin films. Soft magnetic material with large permeability and low energy loss in the GHz range is a challenge for ...We review our works that focus on the microwave magnetic properties of metallic, ferrite and granular thin films. Soft magnetic material with large permeability and low energy loss in the GHz range is a challenge for the inforcom technologies. GHz magnetic properties of the soft magnetic thin films with in-plane anisotropy were investigated. It is found that several hundreds of permeability at the GHz frequency was achieved for Col00_xZrx and Co90Nbl0 metallic thin films because of their high satu- ration magnetization, and an adjustable resonance frequency from 1.3 to 4.9 GHz was obtained. Compared with the metallic thin films, the weaker saturation magnetization of Ni-Zn ferrite thin films results in several tens of permeability at the GHz frequency, but the larger resistivity of the ferrite prepared in situ without any heating treatments has lower energy loss. In order to obtain materials with large permeability and low energy loss in the GHz range, the [CoFe-NiZn ferrite] composite granular thin films were investigated, where the advantage of higher saturation magnetization for the metallic alloy and the high resis- tivity as well as high saturation magnetization for the ferrite results in a good GHz magnetic performance.展开更多
文摘Y98-61403-224 9907157具有钙钛矿相关结构的氧化物材料的电子跳动载流子迁移率和热电特性=Hopping carrier mobilites and ther-moelectric properties of oxide materials with perovskite-related structure[会,英]/Ohtaki,M.& Tokunaga,T.//1997 16th International Conference on Thermo-electrics.—224～227（G）本文研究了钙钛矿（即正铁氧化）型氧化物的热电特性,特别是电子跳动载流子迁移率。主要分析了基于 CaMnO<sub>3</sub>的氧化物的载流子迁移率;利用电子跳动传导机理研究了该材料的热电特性;还给出了室温下该材料的电导率、塞贝克系数和功率因数同温度的关系曲线等。
基金supported by the National Natural Science Foundation of China (Grant No. 11034004)National Science Fund for Distinguished Young Scholars (Grant No. 50925103)+1 种基金Key Grant Project of Chinese Ministry of Education (Grant No. 309027)the Fundamental Research Funds for the Central Universities (Grant No. lzujbky-2010-219)
文摘We review our works that focus on the microwave magnetic properties of metallic, ferrite and granular thin films. Soft magnetic material with large permeability and low energy loss in the GHz range is a challenge for the inforcom technologies. GHz magnetic properties of the soft magnetic thin films with in-plane anisotropy were investigated. It is found that several hundreds of permeability at the GHz frequency was achieved for Col00_xZrx and Co90Nbl0 metallic thin films because of their high satu- ration magnetization, and an adjustable resonance frequency from 1.3 to 4.9 GHz was obtained. Compared with the metallic thin films, the weaker saturation magnetization of Ni-Zn ferrite thin films results in several tens of permeability at the GHz frequency, but the larger resistivity of the ferrite prepared in situ without any heating treatments has lower energy loss. In order to obtain materials with large permeability and low energy loss in the GHz range, the [CoFe-NiZn ferrite] composite granular thin films were investigated, where the advantage of higher saturation magnetization for the metallic alloy and the high resis- tivity as well as high saturation magnetization for the ferrite results in a good GHz magnetic performance.
