Core and shell structure of ytterbium sesquioxide nanoparticles
作者： Milica Vucinic-Vasic , Aleksandar Kremenovic , Aleksandar S. Nikolic , Philippe Colomban , Leo Mazzerolles
DOI: 10.1016/J.JALLCOM.2010.03.158
关键词: Crystallite 、 Bixbyite 、 Sesquioxide 、 Materials science 、 Shell (structure) 、 Monoclinic crystal system 、 Crystal structure 、 Raman spectroscopy 、 Microstructure 、 Crystallography 、 Mechanical engineering 、 Materials Chemistry 、 Mechanics of Materials 、 Metals and Alloys
摘要: Abstract This paper reports results concerning the crystal structure of core and shell as well microstructure 25 nm-ytterbium sesquioxide (Yb2O3) nanoparticles synthesized using a unique method based on thermal decomposition 2,4 pentadione complex. Used Raman spectroscopy measurements indicate core/shell structure, with monoclinic or mixture cubic symmetry particle shell. In addition, XRPD SAED confirmed bixbyite type for (space group I 3 ¯ ). Broadening observed bands indicates structural distortions in nanocrystalline sample. The size/strain analysis was done data Fullprof/MarqX approach. Anisotropy X-ray line broadening is caused by size effects only. resulting mean microstrain (6 × 10−4) points to low concentration defects within crystallites.
elsevier.com
sci-hub.se 参考文章(15)
Robert L Snyder, Jaroslav Fiala, Hans J Bunge, None, Defect and Microstructure Analysis by Diffraction ,(2000)
Binary rare earth oxides Kluwer Academic Publishers. ,(2005) , 10.1007/1-4020-2569-6
LeRoy Eyring, Progress in the science and technology of the rare earths Pergamon Press. ,(1964)
Kazunori Takaichi, Hideki Yagi, Jianren Lu, Jean-Francois Bisson, Akira Shirakawa, Ken-ichi Ueda, Takagimi Yanagitani, Alexander A. Kaminskii, Highly efficient continuous-wave operation at 1030 and 1075 nm wavelengths of LD-pumped Yb3+:Y2O3 ceramic lasers Applied Physics Letters. ,vol. 84, pp. 317- 319 ,(2004) , 10.1063/1.1641514
A Kremenovic, J Blanusa, B Antic, Ph Colomban, V Kahlenberg, C Jovalekic, J Dukic, A Y2O3:Yb nanoscale magnet obtained by HEBM: C3i/C2 site occupancies, size/strain analysis and crystal field levels of Yb3+ ions Nanotechnology. ,vol. 18, pp. 145616- ,(2007) , 10.1088/0957-4484/18/14/145616
J. Blanusa, B. Antic, A. Kremenovic, A.S. Nikolic, L. Mazzerolles, S. Mentus, V. Spasojevic, Particle size effect on Néel temperature in Er2O3 nanopowder synthesized by thermolysis of 2, 4-pentadione complex Solid State Communications. ,vol. 144, pp. 310- 314 ,(2007) , 10.1016/J.SSC.2007.09.003
Jan-Christoph Panitz, Jean-Claude Mayor, Beda Grob, Wilhelm Durisch, A Raman spectroscopic study of rare earth mixed oxides Journal of Alloys and Compounds. ,vol. 303, pp. 340- 344 ,(2000) , 10.1016/S0925-8388(00)00606-X
M. Marezio, Refinement of the crystal structure of In2O3 at two wavelengths Acta Crystallographica. ,vol. 20, pp. 723- 728 ,(1966) , 10.1107/S0365110X66001749
DONALD R. ULRICH, Chemical Processing of Ceramics Chemical & Engineering News. ,vol. 68, pp. 28- 40 ,(1990) , 10.1021/CEN-V068N001.P028
Nita Dilawar, Shalini Mehrotra, D. Varandani, B.V. Kumaraswamy, S.K. Haldar, A.K. Bandyopadhyay, A Raman spectroscopic study of C-type rare earth sesquioxides Materials Characterization. ,vol. 59, pp. 462- 467 ,(2008) , 10.1016/J.MATCHAR.2007.04.008