机构

• 长春光学精密机械与物... [2]
• 大连化学物理研究所 [1]

采集方式

• OAI收割 [3]

内容类型

• 会议论文 [2]
• 期刊论文 [1]

发表日期

• 2007 [1]
• 2006 [1]
• 2002 [1]

学科主题

筛选

浏览/检索结果: 共3条，第1-3条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 The structural transition of Gd2O3 nanoparticles induced by high pressure (EI CONFERENCE) 会议论文  OAI收割 作者:  Zhang J.;  Li D.;  Wang X.;  Wang X.;  Wang X. 收藏  |  浏览/下载：27/0  |  提交时间：2013/03/25 The structural transition of nanosize Gd2O3 is studied using high pressure energy dispersive x-ray diffraction and high pressure photoluminescence. The original structure of the nanosized sample shows a mixture of cubic and monoclinic structure. Our results show that the cubic and most of the monoclinic structure turns into hexagonal structure above 10.35GPa. But a small proportion of monoclinic structure can be present up to the highest pressure  36.2GPa. When the pressure is released  the hexagonal structure partly reverts to monoclinic structure  so the sample shows a mixture of hexagonal and monoclinic structure. The structural transition from monoclinic to hexagonal structure is reversible. IOP Publishing Ltd.   The study of optical property for CdS nanocrystalline prepared by precipitation method (EI CONFERENCE) 会议论文  OAI收割 ICO20: Materials and Nanostructures, August 21, 2005 - August 26, 2005, Changchun, China 作者:  Zhang S.;  Li W.;  Li W. 收藏  |  浏览/下载：19/0  |  提交时间：2013/03/25 CdS nanocrystalline were prepared by precipitation from a mixture of aqueous solutions of cadmium salts and sulfur salts without adding any surface-termination agent. Their crystal structures and particle sizes were determined by X-ray diffraction (XRD). The CdS nanocrystalline precipitated from different precursors exhibited three cases: cubic phase  hexagonal phase and a mixture of cubic and hexagonal phases. The photoluminescence (PL) of cadmium salt precursors and CdS nanocrystalline is also analyzed. Similar spectral band structure of cadmium salt precursors and CdS nanocrystalline is found. The spectral intensity of the CdS-Cd rich and CdS-S rich nanocrystalline shows that the precursors themselves have important effect on the PL of CdS nanocrystalline.   Synthesis and catalytic performances of mesoporous aluminosilicates of cubic and hexagonal structure with stronger acid sites 期刊论文  OAI收割 chemical journal of chinese universities-chinese, 2002, 卷号: 23, 期号: 6, 页码: 1171-1173 作者:  Li, G;  Kan, QB;  Wu, TH;  Hou, CM;  Huang, JH 收藏  |  浏览/下载：28/0  |  提交时间：2015/11/10 mesoporous materials  cubic and hexagonal structure  acidity  alkylation