An investigation of phase separation by magnetic force microscopy in La 0.45 Sr 0.55 MnO 3-δ (δ≈0.01)
| Autor: | Zhang Shao-Ying, Wang Zhi-Hong, Li Run-wei, Zhang Zhen-Rong, Han Bao-Shan, Shen Bao-Gen, Cheng Zhao-Hua, Sun Ji-Rong Li Qing-An |
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| Rok vydání: | 2002 |
| Předmět: |
Materials science
Condensed matter physics Magnetic domain General Physics and Astronomy chemistry.chemical_element Oxygen law.invention Condensed Matter::Materials Science Paramagnetism Ferromagnetism chemistry law Curie Antiferromagnetism Condensed Matter::Strongly Correlated Electrons Magnetic force microscope Electron paramagnetic resonance |
| Zdroj: | Chinese Physics. 11:288-292 |
| ISSN: | 1741-4199 1009-1963 |
| DOI: | 10.1088/1009-1963/11/3/317 |
| Popis: | We have found phase separation in La0.45Sr0.55MnO3-δ (LSMO) by means of electron spin resonance, magnetic force microscopy (MFM) and magnetic measurements. Ferromagnetic and antiferromagnetic phases can coexist at low temperatures and ferromagnetic and paramagnetic phases coexist when the temperature lies between the Neel and Curie temperatures. The size and shape of the ferromagnetic phases (the minority phases) was first observed directly from MFM images. It is suggested that the phase separation in LSMO is not the charge segregation type, but an electroneutral type due perhaps to the nonuniform distribution of oxygen vacancies. |
| Databáze: | OpenAIRE |
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