Chin. Phys. Lett.  2009, Vol. 26 Issue (8): 087201    DOI: 10.1088/0256-307X/26/8/087201
CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
Charge Transport and Magnetotransport Properties of Polyimide Irradiated by 80keV Co Ions
CHEN Tian-Xiang1, YAO Shu-De1, HUA Wei1, FA Tao1, LI Lin1, ZHOU Sheng-Qiang2
1State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 1008712Institut für Ionenstrahlphysik und Materialforschung, Forschungszentrum Dresden-Rossendorf e.V., Postfach 510119, 01314 Dresden, Germany
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CHEN Tian-Xiang, YAO Shu-De, HUA Wei et al  2009 Chin. Phys. Lett. 26 087201
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Abstract Charge transport properties of polyimide films implanted with 80keV Co ions at two different fluences (series I: 1.25×1017 ions/cm2, series II: 1.75×1017ions/cm2) are studied in detail. For series I, the temperature dependence of surface resistivity fits Mott's equation very well. It is on the insulating side of the insulator-metal transition (IMT). However, for series II, the temperature dependence of surface resistivity is not in agreement with Mott's equation. It is on the metallic side of IMT. The magnetotransport properties of these two series are also studied. No significant magnetoresistive effect is observed for series I at both 5K and 300K. For series II, an obvious magnetoresistive effect is observed at 5K, while there is no magnetoresistive effect at 300K. Rutherford backscattering spectrometry (RBS) is applied to confirm the actual fluence for these two series.
Keywords: 72.20.Jv      75.47.Pq      61.72.Up     
Received: 12 March 2009      Published: 30 July 2009
PACS:  72.20.Jv (Charge carriers: generation, recombination, lifetime, and trapping)  
  75.47.Pq (Other materials)  
  61.72.up (Other materials)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/26/8/087201       OR      https://cpl.iphy.ac.cn/Y2009/V26/I8/087201
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CHEN Tian-Xiang
YAO Shu-De
HUA Wei
FA Tao
LI Lin
ZHOU Sheng-Qiang
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