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| 1 | Synthesis of iron(Ⅲ)-doped nanostructure TiO_2/SiO_2 and their photocatalytic activity显示文摘Iron(Ⅲ)-doped nanostructure TiO2-coated SiO2 (TiO2/SiO2) particles were prepared using the layer-by-layer as-sembly technique and their photocatalytic property was studied. TiO2 colloids were synthesized employing the sol-gel method with TiCl4 as a precursor. The samples were characterized by Fourier transform infrared spectroscopy (FTIR), SEM, EDS, XPS, and XRD. The experimental results show that TiO2 nanopowders on the surface of SiO2 particles are well distributed, the amount of TiO2 is increased with the adding of coating layers, the pure anatase-TiO2 coating layers are synthesized at 500°C, and the photocatalytic activity of Fe3+-doped TiO2/SiO2 is higher than that of undoped TiO2/SiO2. | CHEN Rufen ZHANG Lei SONG Xiuqin WEI YU HOU Denglu | 2007 | Rare Metals2007，26，6： | 9 |
| 2 | Roles of Te and Mn in the two phases of manganite with nominal composition La_(0.6)Sr_(0.1)Te_xMnO_3显示文摘Powder samples with nominal composition La0.6Sr0.1TexMnO3 (x = 0.00, 0.05, 0.10, 0.15, 0.20) were prepared using the sol-gel method with thermal treatment up to 1473 K. On the basis of powder X-ray diffraction (XRD), thermogravimetric and magnetic measurements, it was found that almost all of the Te and a few of the Mn ions were lost from the samples when they were calcined at 1473 K. The reason for the Te loss and a quantitative phase analysis for the samples calcined at 1473 K are discussed in detail. | LI Yanfeng JI Denghui ZHAO Zhiwei TANG Guide LIU Shaopeng ZHANG Yuge LI Zhuangzhi HOU Denglu ZHU Minggang | 2011 | Rare Metals2011，30，3： | 2 |
| 3 | Magnetic anisotropy and coercivity of ultrafine iron particles显示文摘 | Hou Denglu Nie Xiafu Lou helie | 1998 | Journal of Magnetism and Magnetic Materials1998，188，： | 1 |
| 4 | Studies on magnetic aftereffect of Fe304 nano - particles显示文摘 | DENGLU HOU ZI XIA DU CAI XIA YUE | 2007 | Journal of Alloys and Compounds2007，429，： | 1 |
| 5 | Enhanced room temperature magnetoresistance in maganites La_(0.60)Sr_(0.25-y)Na_(0.15)Δ_yMnO_(31)显示文摘Bulk polycrystalline samples of La0.60Sr0.4MnO3 and La0.60Sr0.25-yNa0.15ΔyMnO3 with 0.00≤y≤0.15 (“Δ” representing cation vacancy) were successfully synthesized using the sol-gel method. The structural, magnetic, and electrical properties of the polycrystalline of the samples were investigated. The results of X-ray powder diffraction patterns show that these compounds crystallize in a distorted rhombohedral structure with the space group R3C. The measurement shows that, with vacancy content y increasing, the unit cell volume V of samples increases, furthermore, the Curie temperature TC decreases. The temperature dependence of resistivity shows that all samples undergo a metal-semiconductor transition accompanying a ferromagnetic to paramagnetic transition with the increase of temperature. Under an applied filed of 1.8 T, a maximum room temperature magnetoresistance (MR) of 20% is obtained at 293 K for the compound La0.60Sr0.1Na0.15Δ0.15MnO3. The MR peak value of La0.60Sr0.1Na0.15Δ0.15MnO3 increases 2 times more than that of La0.60Sr0.40MnO3 (MRP=6.4%, TMR=373 K), and the MR peak is shifted from 373 K to room temperature. | TANG Guide ZHAO Fuwei LI Zhuangzhi HOU Denglu ZHAO Xu LI Zhiqing | 2006 | Rare Metals2006，25，z1： | 0 |
| 6 | Behavior of Mn^(2+) in perovskite manganites with nominal composition La_(0.6-x)Nd_xSr_(0.1)MnO_3显示文摘The fact that there are Mn^(2+) at the A sites in the ABO_3 perovskite phase of manganites with the nominal composition La_(0.6-x)Nd_xSr_(0.1)MnO_3 showed by detailed experimental study and theoretical calculations.The magnetic moments of these Mn^(2+) are antiparallel to those of the Mn ions at the B sites.The content of the Mn^(2+) increases as the average ionic radius,,of the ions at A sites decreases,resulting in the experimentally observed phenomenon that the content of the Mn_3O_4 phase in the manganites decreases with decreasing . | Li, Yanfeng Ji, Denghui Liu, Shaopeng Tang, Guide Li, Zhuangzhi Yao, Yuxi Hou, Denglu Zhu, Minggang | 2012 | Rare Metals2012，31，4： | 0 |
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