Electric transport in composite Fe–Ta–O granular film prepared by plasma jet technique
详细信息 查看全文
- 作者：Lobotka ; P. ; Vavra ; I. ; Fendrych ; F. ; Kraus ; L.
- 关键词：Granular systems ; Magnetoresistance &ndash ; thin films ; Tunneling ; Coulomb blockade
- 刊名：Journal of Magnetism and Magnetic Materials
- 出版年：2002
- 出版时间：February, 2002
- 年：2002
- 卷：240
- 期：1-3
- 页码：491-493
- 全文大小：147 K
文摘
Electrical transport measurements on composite Fe33.7Ta9.5O56.8 nanogranular magnetoresistive film prepared by supersonic plasma jet technique are reported. The temperature dependence of the resistance lnR
phs/BQ1.GIF>Tp>−1/2 p> correlates with a broad size distribution of Fe-nanocrystallites. The differential conductance G(V) curves reveal a presence of tunneling in the range 300–4K. The shape of the G(V,T) curves below phs/BQ1.GIF>160K indicates the presence of Coulomb blockade.
phs/BQ1.GIF>Tphs/BQ1.GIF>160K indicates the presence of Coulomb blockade.