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| 1 | Effects of Annealing on Pt/Co Multilayer Films显示文摘Annealing effects are helpful guides to study Pt/Co multilayer interface diffusions.However,the results reported till now are different.Here we report the increase in coercivity Hc and the decrease in Kerr rotationθk after being annealed in vacuum or argon atmosphere.We attribute these effects to the formation of CoPt3 compound. | JIANG Zhihong SHEN Defang SHI Tiansheng GUO Changlin GUO Rongfa | 1994 | Chinese Physics Letters1994，11，3： | 0 |
| 2 | Stability of diatomaceous silica and its geochemical implication显示文摘An experiment of stability of diatomaceous silica was performed. The results show that pH value and temperature dominantly influence the stability. The pH value concerning largely dissolving diatomaceous silica is 2-3 higher than that amorphous silica due to the buffer action of coexistent clay minerals. The solubility of diatomaceous silica rises distinctly when temperature is over 40℃, which suggests the cause of distribution of large-scale diatomite de- | Huanxin Weng Zhongyue Shen Mingyong Yuan Defang Guo Jianyu Chen | 1999 | Chinese Science Bulletin1999，44，23： | 0 |
| 3 | Effects of Nd Doping on Magnetic-Optical Properties of GdFeCo Thin Films显示文摘The GdFeCo and NdGdFeCo thin films were prepared by sputtering, and their hysteresis loops, the temperature dependence of the saturation magnetization M_s and the magneto-optical Kerr spectrum in the visible light range were measured. By studying the effects of light rare earth element Nd doping on the magneto-optical Kerr rotation angle of GdFeCo thin films, it is found that proper Nd additives in GdFeCo films could enhance Kerr rotation at short wavelengths. So it could be better medium used as the readout layer of center aperture detection magnetically induced super resolution (CAD-MSR). | Fang Ming Wang Xianying Wei Jinsong Shen Defang Gan Fuxi | 2006 | Journal of Rare Earths2006，24，2： | 0 |
| 4 | Sequential reactant water management by complementary multisite catalysts for surpassing platinum hydrogen evolution activity显示文摘Alkaline hydrogen evolution reaction(HER)offers a near-zero-emission approach to advance hydrogen energy.However,the activity limited by the multiple reaction steps involving H_(2)O molecules transfer,absorption,and activation still unqualified the thresholds of economic viability.Herein,we proposed a multisite complementary strategy that incorporates hydrophilic Mo and electrophilic V into Ni-based catalysts to divide the distinct steps on atomically dispersive sites and thus realize sequential regulation of the HER process.The Isotopic labeled in situ Raman spectroscopy describes 4-coordinated hydrogen bonded H_(2)O to be free H_(2)O passing the inner Helmholtz plane in the vicinity of the catalysts under the action of hydrophilic Mo sites.Furthermore,potential-dependent electrochemical impedance spectroscopy(EIS)reveals that electrophilic V sites with abundant 3d empty orbitals could activate the lone-pair electrons in the free H_(2)O molecules to produce more protic hydrogen,and dimerize into H_(2) at the Ni sites.By the sequential management of reactive H_(2)O molecules,NiMoV oxides multisite catalysts surpass Pt/C hydrogen evolution activity(49 mV@10 mA∙cm^(-2) over 140 h).Profoundly,this study provides a tangible model to deepen the comprehension of the catalyst–electrolyte interface and create efficient catalysts for diverse reactions. | Yu Lin Defang Ding Shicheng Zhu Qunlei Wen Huangjingwei Li Zhen Li Youwen Liu Yi Shen | 2024 | Nano Research2024，17，3： | 0 |
| 5 | An Extremely High Coercivity in Cu Doped Bi,Ga: DyIG Films for Magneto-optical Recording显示文摘Bi,Ga:DyIG and Cu doped Bi,Ga:DyIG films on glass substrates have been prepared by the pyrolysis method,and their coercive force(H_(c))and compensation temperature were measured.An extremely high H_(c) value of 13kOe at room temperature was obtained in Cu doped Bi,Ga:DyIG films. | ZHOU Yong SHEN Defang GAN Fuxi | 1993 | Chinese Physics Letters1993，10，3： | 0 |
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