Manganese oxide nanoparticles in SrTiO3: Mn

被引:20
作者
Badalyan, A. G. [3 ]
Syrnikov, P. P. [3 ]
Azzoni, C. B. [1 ,2 ]
Galinetto, P. [1 ,2 ]
Mozzati, M. C. [1 ,2 ]
Rosa, J. [4 ]
Trepakov, V. A. [3 ,4 ]
Jastrabik, L. [4 ]
机构
[1] Univ Pavia, CNISM, I-27100 Pavia, Italy
[2] Univ Pavia, Dipartimento Fis A Volta, I-27100 Pavia, Italy
[3] RAS, AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
[4] Inst Phys, Prague 18221, Czech Republic
关键词
D O I
10.1063/1.2963189
中图分类号
O59 [应用物理学];
学科分类号
摘要
Weakly concentrated "as-grown" and reduced SrTiO3:Mn crystals and ceramics are investigated by means of electron paramagnetic resonance (EPR) to get new insights concerning the Mn substitution in the strontium titanate structure. The temperature dependence of Mn2+ and Mn4+ EPR spectra strongly indicates the formation of MnO2 or MnO small particles to be the favored configuration for the Mn insertion in SrTiO3. Only a part of manganese ions incorporates into the crystal lattice in B position as Mn4+ ions. (c) 2008 American Institute of Physics.
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页数:4
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