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您的检索式：作者名="J.Ping Liu"
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| 1 | The enhanced negative thermal expansion in less-oxygen-vacancies copper pyrophosphate显示文摘For oxides,controlling the concentration of oxygen vacancy is a useful way to optimize their functional properties.However,when it comes to the field of negative thermal expansion(NTE),much less attention has been paid to the effect of oxygen vacancy on NTE,though oxide-typed NTE materials account for more than 40%of the total NTE materials.Here,we report that the linear coefficient of thermal expansion at 250–350 K of copper pyrophosphate(i.e.,Cu_(2)P_(2)O_(7))can be significantly improved from–13.88 to–36.60 ppm/K when the synthesis temperature is raised from 1073 to 1373 K.The combined study including X-ray absorption near edge structure,neutron powder diffraction,and X-ray diffraction has confirmed the selective vacancies in the O1 site for low-temperature synthesized samples,which suppress both the phase-transition and framework-structure driven NTE simultaneously.Our result proposes a new approach for optimizing the NTE effect of oxides. | L.Lu Xie T.Fei Shi J.Chao Lin X.Kai Zhang X.Kang Zhong K.Ke Liu B.Ke Dong Cheng Yang X.Lian Wang T.Jiao Xiong W.Sheng Yan J.Ping Xu H.Can Chen Wen Yin Ming Li Peng Tong W.Hai Song Y.Ping Sun | 2023 | Journal of Materials Science & Technology2023，，15： | 1 |
| 2 | Preparation and Magnetic Properties of Anisotropic SmCo5/Co Composite Particles显示文摘Anisotropic SmCo_5/Co nanocomposite powders have been prepared by electroless Co deposition on commercial SmCo_5 powders with hydrazine as reducer. The Co particles are mainly in the range of 8–27 nm and form dense/continuous soft magnetic coatings on the surface of SmCo_5 powders. Exchange coupling happened between the coated Co soft magnetic particles and the SmCo_5 hard phase. As a result, SmCo_5/Co nanocomposite powders with remanence of73.58 emu/g and energy product of 13.74 MGOe were obtained in the optimum condition, as compared with those of70.52 emu/g and 13.40 MGOe for uncoated SmCo_5 powders. The effects of Co adding amount on Co particle size, coating morphology, and magnetic properties of SmCo_5/Co products were investigated. | Lin Lv Feng-Qing Wang Qiang Zheng Juan Du Xian-Lin Dong Ping Cui J.Ping Liu | 2018 | Acta Metallurgica Sinica(English Letters)2018，31，2： | 1 |
| 3 | Air stable Fe nanostructures with high magnetization prepared by reductive annealing显示文摘Monodispersed Fe nanospindles and nanoparticles were successfully synthesized through environmentfriendly reductive annealing ?-Fe OOH nanorods. Effects of annealing temperature and reaction atmosphere on microstructure, phase, and magnetic property of Fe nanostructures were investigated.The as-obtained pure Fe nanoparticles with mean size of 45 nm had a high saturation magnetization up to 207 emu/g, close to that of bulk material(218 emu/g), which exhibited high air stability. After exposing in air for 2 and 7 days, the as synthesized Fe nanoparticles still showed high magnetization of 182 and141 emu/g, respectively. | Yanhua Liu Baoru Bian Chunfeng Hu Pengpeng Yi Juan Du Weixing Xia Jian Zhang Aru Yan Ying Li J.Ping Liu | 2017 | Journal of Materials Science & Technology2017，33，11： | 0 |
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