Crystal structure and electrical transport properties of polycrystalline TbMn1−xFexO3 |
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| Institution: | 1. Department of Physics, Center for Optoelectronics Materials and Devices, Zhejiang Sci-Tech University, Hangzhou, 310018, PR China;2. State Key Laboratory of Information Photonics & Optical Communication, Beijing University of Posts and Telecommunications, Beijing 100876, PR China;1. Leibniz-Institut für Festkörper- und Werkstoffforschung (IFW) Dresden, D-01171 Dresden, Germany;2. Dipartimento di Fisica and Unità CNISM di Pavia, Università di Pavia, I-27100 Pavia, Italy;3. Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland;4. National Physical Laboratory (CSIR), New Delhi 110012, India;5. Dipartimento di fisica e Scienze della Terra, parco Area delle Scienze, 7A, 43124 Parma, Italy;6. Institut für Festkörperphysik, Technische Universität Dresden, D-01062 Dresden, Germany;1. Institute of Physics AS CR, v.v.i., Na Slovance 1999/2, 182 21 Prague 8, Czech Republic;2. Institute of Inorganic Chemistry AS CR, v.v.i., Husinec-Řež 1001, 25068 Řež, Czech Republic;1. Departamento de Física, IGCE-Universidade Estadual Paulista – UNESP, C.P. 178, CEP 13500-970 Rio Claro, São Paulo, Brazil;2. Centro Brasileiro de Pesquisas Físicas, Rua Xavier Sigaud 150, CEP 22290-180 Rio de Janeiro-RJ, Brazil;3. Departamento de Física, Universidade Federal de São Carlos, C.P. 676, CEP 13560-970 São Carlos, São Paulo, Brazil;4. Instituto de Física, Universidade Federal Fluminense, Campus da Praia Vermelha, CEP 24210-340 Niterói, Rio de Janeiro, Brazil;1. Physics Department, University of Gujrat, Gujrat, Pakistan;2. Sustainable Energy Technologies Center, College of Engineering, King Saud University, PO-Box 800, Riyadh 11421, Saudi Arabia;3. Physics Department, Bahauddin Zakariya University, Multan, Pakistan;4. Spintronics Laboratory, Physics Department, International Islamic University, Islamabad, Pakistan;5. Physics Department, Hazara University, Mansehra, Pakistan;1. Department of Physics, Shivaji University, Kolhapur 416004, India;2. Department of Physics, Rajaram College, Kolhapur 416004, India |
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| Abstract: | Polycrystalline TbMn1−xFexO3 (x=0, 0.1, 0.3, 0.5, 0.7, 0.9, 1) were synthesized by solid sintering method. The Rietveld refinement results based on the X-ray powder diffraction (XRD) data showed that all samples were identified as orthorhombic perovskite structure with space group Pbnm (62). The lattice parameters a and c increased, while the b decreased with increasing of Fe content, indicating the crystal unit cell shrinks in the ab-plane and extends along c-axis with increasing concentration of Fe. Temperature dependent resistance (R–T) was also measured. The transition temperature of TbMn1−xFexO3 samples increased monotonically with increase of x. The activation energy of TbMn1−xFexO3 decreased with increasing Fe content (x≤0.5) and increased with increasing Fe content when x>0.5, meaning that the TbMn0.5Fe0.5O3 has the lowest activation energy. These results implied that the transition temperature and conductivity could be controlled by impuring different elements, especially to obtained better performance as for the semiconductor materials working at broad temperature. |
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| Keywords: | Semiconductors X-ray diffraction Crystal structure Electrical properties |
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