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| 1 | Exchange-coupling interaction and effective anisotropy in nanocomposite permanent materials显示文摘Taking Nd2Fe14B/α-Fe as example, the exchange-coupling interactions between magnetically soft and hard grains in nanocomposite permanent materials and their effects on the effective anisotropy of materials were investigated. The calculation results expressed that the exchange-coupling interactions are enhanced with the reduction of grain size, and the effective anisotropy of materials decreases with the reduction of gram size and the increase of magnetically soft phase component. The remanence and the effective anisotropy of materials possess the opposite variation trend with the change of grain size and phase ratio. The mean grain size should be in the range of 10-15 nm and the ratio of soft phase should be less than 50% for getting the magnet with high energy product. | Ruwei Gao Weicun Feng Wei Chen Biao Wang Guangbing Han Peng Zhang | 2002 | Chinese Science Bulletin2002，47，14： | 5 |
| 2 | Trace Amounts of Triple-Functional Additives Enable Reversible Aqueous Zinc-Ion Batteries from a Comprehensive Perspective显示文摘Although their cost-effectiveness and intrinsic safety,aqueous zinc-ion batteries suffer from notorious side reactions including hydrogen evolution reaction,Zn corrosion and passivation,and Zn dendrite formation on the anode.Despite numerous strategies to alleviate these side reactions have been demonstrated,they can only provide limited performance improvement from a single aspect.Herein,a triple-functional additive with trace amounts,ammonium hydroxide,was demonstrated to comprehensively protect zinc anodes.The results show that the shift of electrolyte pH from 4.1 to 5.2 lowers the HER potential and encourages the in situ formation of a uniform ZHS-based solid electrolyte interphase on Zn anodes.Moreover,cationic NH^(4+)can preferentially adsorb on the Zn anode surface to shield the“tip effect”and homogenize the electric field.Benefitting from this comprehensive protection,dendrite-free Zn deposition and highly reversible Zn plating/stripping behaviors were realized.Besides,improved electrochemical performances can also be achieved in Zn//MnO_(2)full cells by taking the advantages of this triple-functional additive.This work provides a new strategy for stabilizing Zn anodes from a comprehensive perspective. | Ruwei Chen Wei Zhang Quanbo Huang Chaohong Guan Wei Zong Yuhang Dai Zijuan Du Zhenyu Zhang Jianwei Li Fei Guo Xuan Gao Haobo Dong Jiexin Zhu Xiaohui Wang Guanjie He | 2023 | Nano-Micro Letters2023，15，6： | 2 |
| 3 | Effect of microstructure on the coercivity of HDDR Nd-Fe-B permanent magnetic alloy显示文摘The effect of the grain boundary microstructure on the anisotropy and coercivity was investigated in an HDDR Nd-Fe-B permanent magnetic alloy. Considering the special microstructure of its magnetic powder grain, an anisotropic theoretical model influenced simultaneously by the structure defect at the grain boundary and the exchange coupling interaction was put forward. The variations of the structure defect factors based on the nucleation and pinning mechanism with 2r0/lex (where r0 and lex are the defect thickness and the length of exchange coupling, respec-tively) were calculated. The results show that the coercivity mechanism of an HDDR Nd-Fe-B permanent magnetic alloy is greatly related to its microstructure defect at the grain boundary. For a fixed lex, when 2r0/lex < 1.67, the coercivity is controlled by the pinning mechanism; when 2r0/lex > 1.67, it is determined by the nucleation mechanism. The coercivity reaches the maximum when 2r0/lex = 1.67. The calcula-tion result is consistent well with the experimental result given by Morimoto et al. | LIU Min SUN Yan HAN GuangBing YANG Wu GAO RuWei | 2008 | Science China(Physics,Mechanics & Astronomy)2008，51，10： | 2 |
| 4 | Burstein shift and UV photoresponse in IBAD-deposited transparent conducting ZnO films显示文摘 | Zhang Deheng Gao Ruwei Ma Honglei | | 0，，： | 1 |
| 5 | Effective anisotropy and coercivity in nanocrystalline single-phase NdFeB permanent magnetic materials 显示文摘 | Han Guangbing Gao Ruwei Feng Weicun | 2003 | Science in China (G)2003，46，4： | 1 |
| 6 | 显示文摘 | Gao Ruwei Feng Weicun Chen Wei | 2002 | Chinese Science Bulletin2002，47，14： | 1 |
| 7 | Effective anisotropy and coercivity in nanocrystalline single-phase NdFeB permanent magnetic material显示文摘 | Guangbing Han Ruwei Gao Weicun Feng Hanqiang Liu Biao Wang Peng Zhang Wei Chen Wei Li Yongquan Guo | 2003 | Science in China Series G: Physics Mechanics and Astronomy2003，，4： | 1 |
| 8 | Effective anisotropy and coercivity in nanocrystalline single-phase NdFeB permanent magnetic material显示文摘 | Guangbing Han Ruwei Gao Weicun Feng Hanqiang Liu Biao Wang Peng Zhang Wei Chen Wei Li Yongquan Guo | 2003 | Science in China Series G: Physics Mechanics and Astronomy2003，，4： | 1 |
| 9 | 显示文摘 | Gao Ruwei Feng Weicun Chen Wei | 2002 | Chinese Science Bulletin2002，47，14： | 1 |
| 10 | Dependence of magnetic properties of HDDR Nd-Fe-B bonded magnet on intergranular phase显示文摘用在谷物边界的建议不同 anisotropy 表情 K 1′(r) 和 K 1″(r) ,我们调查效果内部平均 anisotropy 〈K 1〉 上的小粒的阶段(IP )谷物边界和 coercivity H HDDR (加氢, disproportionation,解吸附作用和再结合) 的 c Nd-Fe-B 结合了磁铁。当 IP 的厚度 d 是零时,结果显示那, 〈K 1〉并且 H c 基于 K 1″(r) 基于 K 1′(r) 等于相应的。当 d 拿非零价值时, 〈K 1〉并且 H 分别地, c 与增加 d 更快基于 K 1″(r) 掉落并且升起。当 d 是 1 nm,结构缺点厚度 r 0 接近域墙(∼4 nm ) 的厚度时,计算 coercivity 与 avaiable 一致很好试验性的数据。 | LIU Min GAO RuWei HAN GuangBing YANG Wu | 2009 | Chinese Science Bulletin2009，54，18： | 0 |
| 11 | Exchange-coupling interaction, effective anisotropy and magnetic property of nano-magnetic materials显示文摘在在 nanocrystalline 的谷物之间的联合交换的相互作用的理论和模型磁性的材料这里被介绍。他们的不足和区别 frcrn 试验性的结果被削尖 out' 和一些修订被做。阶段部件 ratio' 的效果在 nanocomposite peimanent 材料和改进模型的有效 anistropy 和磁性上的谷物尺寸和 microstnjcture 详细被讨论。 | SUN Yan GAO Ruwei HAN Baiping LIU Min HAN Guangbing FENG Weicun | 2007 | Progress in Natural Science:Materials International2007，17，2： | 0 |
| 12 | Magnetism and Its Dependence on Annealing Temperature for Sputtered Co/Cu Multilayers显示文摘Magnetism and its dependence on annealing temperature for r.f. sputtered Co/Cu multilayers have been investigated. It was found that the easy magnetization axes of the films are paralIel to the substrate and the magnetic properties of both as-sputtered and annealed multilayers are isotropic in the film plane. The coercive field Hc is 4.8 kA/m and the ratio of remanence-tosaturation magnetization Mi/M is about 0.73 for as-sputtered samples. Both Hc and Mr/Ms increase with increasing annealing temperatures, especially when annealing temperatures are higher than 400℃. These experimental results can be interpreted using the ferromagnetic exchange coupling and the pinning theory of the | Gao, Ruwei Liu, Yihua Yan, Shishen Zhang, Deheng Zhang, Lin | 1998 | Journal of Materials Science & Technology1998，14，2： | 0 |
| 13 | Effects of the grain alignment on the coercivity and its angular dependence for NdCoFeB permanent magnets显示文摘The dependence of the macroscopic magnetism for NdCoFeB permanent magnet on the degree of grain alignment has been studied. With an increase in grain alignment degree, the coercivity of the permanent magnet decreases and the remanence increases. The decrease rate of the coercivity is smaller than the increase rate of the remanence. The coercivity H c(θ) increases with increasing angle θ between the applied field and the texture axis, and for the permanent magnets with good grain alignment the increase rate of H c(θ) is large. These experimental results can be interpreted by using the starting field theory of coercivity. | Ruwei Gao Wei Li Changguo Ji Deheng Zhang Jiancheng Zhang | 1998 | Chinese Science Bulletin1998，43，2： | 0 |
| 14 | DEPENDENCE OF MAGNETISM OF Nd-Fe-B SINTERMAGNETS ON ORIENTATION MAGNETIC FIELD显示文摘The effect of the orientation magnetic field on the permanent magnetism of Nd-Fe-B sintermagnets is investigated. The results show that the variation law of mag-netism with orientation field obviosly changes at the critical orientation field and the in-tensity of the orientation field should be determined by the dimension ratio of the magnet for effectively utilizing its magnetic energv product. | GAO Ruwei, XIAO MingshanShandong University, Jinan, ChinaZHOU Shouzeng, LIFubiao, ZHANG LidongNational Laboratory, University of Science and Technology Beijing, China Manuscript received 11 April, 1994 | 1994 | Acta Metallurgica Sinica(English Letters)1994，7，2： | 0 |
| 15 | Demagnetization Process and Coercivity for Anisotropic HDDR NdFeB Bonded Magnets显示文摘The demagnetization process and the coercivity mechanism for anisotropic HDDR Nd(Fe,Co)B bonded magnets were studied by comparing the dependence of coercivity on the alignment field applied while the powders were pressed. The results showed that both the remanence and the coercivity of magnet increased with increasing alignment field. The demagnetization process of the magnet can be classified as the nucleation process inside the grains and the domain-wall motion between the grains. The combined effect of two processes determines the coercivity of HDDR NdFeB bonded magnets. | Ruwei GAO and Jiancheng ZHANG (Physics Department, Shandong University, Jinan 250100, China) Xianhong DENG and Yongjun ZHANG (Shandong Metallurgical Research Institute, Jinan 250014, China) | 2000 | Journal of Materials Science & Technology2000，16，4： | 0 |
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