Magnetic field-induced switching of magnetic ordering in SrFeO3−δ
| Autor: | Ramaswamy Murugan, Balan Palanivel, K. Shanmugapriya, D. Mohan Radheep |
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| Rok vydání: | 2016 |
| Předmět: |
Condensed matter physics
Chemistry Magnetometer Transition temperature 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology 01 natural sciences Magnetic field law.invention Hysteresis symbols.namesake Tetragonal crystal system law 0103 physical sciences symbols Antiferromagnetism General Materials Science 010306 general physics 0210 nano-technology Raman spectroscopy Phase diagram |
| Zdroj: | Applied Physics A. 122 |
| ISSN: | 1432-0630 0947-8396 |
| DOI: | 10.1007/s00339-016-0303-5 |
| Popis: | The oxygen-deficient strontium iron oxide SrFeO3−δ (SFO) exhibits richness in the phase diagram over a broad range of temperatures and for other external parameters. Room-temperature X-ray diffraction and Raman spectrum reveals that the structure of synthesized SFO system consists of two mixed phases, i.e., major orthorhombic and minor tetragonal phases. The low-temperature Raman and vibrating sample magnetometer measurements indicated a structural transition below 253 K. The magnetic property of the synthesized SFO for various external magnetic field (up to 5 T) reveals possible variation in oxygen stoichiometry. Also, the application of external H increases Neel transition temperature (T N), suppresses the hysteresis width (W H), and thus weakens the first-order nature of the transition. Our analysis revealed the vanishing of hysteresis and the first-order antiferromagnetic transition becomes a crossover above a critical magnetic field H CR ≈ 5 T. Possible switching of magnetic ordering and oxidation state observed in same system enhances interest in related compounds which may be used in magnetic sensors and other magnetic switching devices. |
| Databáze: | OpenAIRE |
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