Qinfu Zhang
Xiamen University
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Publication
Featured researches published by Qinfu Zhang.
ACS Applied Materials & Interfaces | 2017
Xiang Liu; Laisen Wang; Yating Ma; Hongfei Zheng; Liang Lin; Qinfu Zhang; Yuanzhi Chen; Yulong Qiu; Dong-Liang Peng
Development of microwave absorption materials with tunable thickness and bandwidth is particularly urgent for practical applications but remains a great challenge. Here, two-dimensional nanocomposites consisting of perovskite oxides (LaFeO3) and amorphous carbon were successfully obtained through a one pot with heating treatment using sodium chloride as a hard template. The tunable absorption properties were realized by introducing A-site cation deficiency in LaFeO3 perovskite. Among the A-site cation-deficient perovskites, La0.62FeO3/C (L0.62FOC) has the best microwave absorption properties in which the maximum absorption is -26.6 dB at 9.8 GHz with a thickness of 2.94 mm and the bandwidth range almost covers all X-band. The main reason affecting the microwave absorption performance was derived from the A-site cation deficiency which induced more dipoles polarization loss. This work proposes a promising method to tune the microwave absorption performance via introducing deficiency in a crystal lattice.
Journal of Applied Physics | 2017
Qinfu Zhang; Laisen Wang; X. Wang; Hongfei Zheng; Xiang Liu; Jia Xie; Yulong Qiu; Yuanzhi Chen; Dong-Liang Peng
A Co nanocluster-assembled granular film with three-dimensional cross-connection paralleled conductive paths was fabricated by using the plasma-gas-condensation method in a vacuum environment. The temperature-dependent longitudinal resistivity and anomalous Hall effect of this new type granular film were systematically studied. The longitudinal resistivity of the Co nanocluster-assembled granular film first decreased and then increased with increasing measuring temperature, revealing a minimum value at certain temperature, T min. In a low temperature region ( T < T min), the barrier between adjacent nanoclusters governed the electrical transport process, and the temperature coefficient of resistance (TCR) showed an insulator-type behavior. The thermal fluctuation-induced tunneling conduction progressively increased with increasing temperature, which led to a decrease in the longitudinal resistivity. In a high temperature region, the TCR showed a metallic-type behavior, which was primarily attributed to th...
Scientific Reports | 2017
Qinfu Zhang; X. Wang; Laisen Wang; Hongfei Zheng; Lingqing Lin; Jia Xie; Xinlin Liu; Yulong Qiu; Yaomin Chen; Dong-Liang Peng
A series of Co nanocluster-assembled films with cluster sizes ranging from 4.5 nm to 14.7 nm were prepared by the plasma-gas-condensation method. The size-dependent electrical transport properties were systematically investigated. Both of the longitudinal resistivity (
Journal of Materials Science: Materials in Electronics | 2018
Amei Su; Liqing Wang; Qinfu Zhang; Jia Xie; Qing Luo; Dong-Liang Peng
ieee international nanoelectronics conference | 2016
X.L. Liu; Qinfu Zhang; Liqing Wang; Dong-Liang Peng; Feiming Bai; Lianhui Wang; Yicheng Wang
{\rho }_{xx}
Materials Science Forum | 2015
Lei Xu; Lai Sen Wang; X.L. Liu; C.Y. Zou; Bei Bei Yuan; Qing Luo; Qinfu Zhang; Yi Cheng Wang; Fei Ming Bai; Dong-Liang Peng
Materials Chemistry and Physics | 2017
Xiang Liu; Keyan Cao; Yuanzhi Chen; Yating Ma; Qinfu Zhang; Deqian Zeng; Xiaolong Liu; Laisen Wang; Dong-Liang Peng
ρxx) and saturated anomalous Hall resistivity (
ACS Nano | 2017
Liang Lin; Yating Ma; Qingshui Xie; Laisen Wang; Qinfu Zhang; Dong-Liang Peng
Journal of Alloys and Compounds | 2017
Xiang Liu; Yulong Qiu; Yating Ma; Hongfei Zheng; Laisen Wang; Qinfu Zhang; Yuanzhi Chen; Dong-Liang Peng
{\rho }_{xy}^{A}
Applied Surface Science | 2018
Xiang Liu; Yating Ma; Qinfu Zhang; Zhiming Zheng; Laisen Wang; Dong-Liang Peng
