Evidence for an electrical field induced order–order transition in Nd0.7Sr0.3MnO
| Autor: | I.O. Troyanchuk, V. Morchshakov, G. H. Rao, C.P. Yang, K. Bärner |
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| Rok vydání: | 2004 |
| Předmět: |
Phase transition
Magnetic structure Condensed matter physics Chemistry Mechanical Engineering Metals and Alloys 02 engineering and technology 021001 nanoscience & nanotechnology Polarization (waves) Manganite 01 natural sciences Magnetic field Mechanics of Materials Electric field 0103 physical sciences Materials Chemistry Grain boundary 010306 general physics 0210 nano-technology Phase diagram |
| Zdroj: | Journal of Alloys and Compounds. 383:45-48 |
| ISSN: | 0925-8388 |
| Popis: | Varistor-like electrical transport is found in magnetically ordered Nd 2/3 Sr 1/3 MnO 3− δ compounds for δ >0.05. However, because of correlations of characteristic structures with the magnetic behaviour, transport through magnetic grain or phase boundaries is likely to be important. Aside from the sensitivity to external magnetic fields and to the internal magnetic polarisation, the observed phenomena including the phase transition temperatures are sensitive also to electrical fields. This we deduce from a temperature–current ( T – I ) phase diagram which can be collected from the appearance and/or shift of the characteristic transition temperatures at certain applied currents (or potentials). |
| Databáze: | OpenAIRE |
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