thin films;
epitaxy;
scanning and transmission electron microscopy;
phase transitions;
D O I:
10.1016/S0038-1098(02)00470-2
中图分类号:
O469 [凝聚态物理学];
学科分类号:
070205 ;
摘要:
The results of the simultaneous deposition of Mn3O4 films 100 nm thick at 750 degreesC and P(O-2) = 1 mbar by MOCVD on three different single crystal substrates (MgO, LaAlO3 and SrTiO3) are considered. Using X-ray diffraction, Raman spectrometry, high-resolution transmission electron microscopy and magnetic measurements we have demonstrated that the films grown on MgO differ greatly from the stable tetragonal bulk form of Mn3O4 (hausmannite) and are very similar to the high-temperature cubic form with the suppressed Jahn-Teller distortion in manganese-oxygen octahedra. The hausmannite films of the mixed orientations were grown on perovskite substrates. The experimental results are discussed in the framework of the epitaxial stabilization model. (C) 2002 Elsevier Science Ltd. All rights reserved.
机构:
Tunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, TunisiaTunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, Tunisia
Ouni, B.
Larbi, T.
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Tunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, TunisiaTunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, Tunisia
机构:
Tunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, TunisiaTunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, Tunisia
Amara, M. A.
Larbi, T.
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Tunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, TunisiaTunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, Tunisia
Larbi, T.
Labidi, A.
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机构:
IPEST, Unite Rech Phys Semicond & Capteurs, Tunis 2070, TunisiaTunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, Tunisia
Labidi, A.
Karyaoui, M.
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机构:
Ctr Rech & Technol Energie, Lab Photovolta, Hammam Lif 2050, TunisiaTunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, Tunisia
Karyaoui, M.
Ouni, B.
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Tunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, TunisiaTunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, Tunisia
Ouni, B.
Amlouk, M.
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Tunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, TunisiaTunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, Tunisia
机构:
Univ Milano Bicocca, Dipartimento Sci Mat, via Roberto Cozzi 55, I-20125 Milan, ItalyUniv Milano Bicocca, Dipartimento Sci Mat, via Roberto Cozzi 55, I-20125 Milan, Italy
机构:
Tunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, TunisiaTunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, Tunisia
Larbi, T.
Amara, A.
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h-index: 0
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Tunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, TunisiaTunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, Tunisia
Amara, A.
Ben Saida, L.
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机构:
Tunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, Tunisia
Univ Carthage, Fac Sci Bizerte, Carthage, TunisiaTunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, Tunisia
Ben Saida, L.
Ouni, B.
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Tunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, TunisiaTunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, Tunisia
Ouni, B.
Lakhdar, M. Haj
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Tunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, TunisiaTunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, Tunisia
Lakhdar, M. Haj
Amlouk, M.
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Tunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, TunisiaTunis El Manar Univ, Fac Sci Tunis, Unite Phys Dispositifs Semicond, Tunis 2092, Tunisia