Temperature curve of magnetization and left-handed properties of La0.775Sr0.225MnO3

• Published in: Applied physics letters Vol. 100; no. 17
• Main Authors: Belozorov, D. P., Kalmykova, T. V., Tarapov, S. I., Pogorily, A. M., Tovstolytkin, A. I., Belous, A. G., Solopan, S. A.
• Format: Journal Article
• Language: English
• Published: 23-04-2012
• ISSN: 0003-6951; 1077-3118
• DOI: 10.1063/1.4705729

The left-handed features of Sr doped manganite lanthanum ceramics La0.775Sr0.225MnO3 in the vicinity of its Curie temperature are studied. The left-handed features are responsible for appearance of the additional transparency peak in the forbidden band of the photonic crystal bounded with the above manganite. The magnitude of the critical exponent β (β ∼ 0.50) determined in the work agrees with results reported in the literature and allows supposing that long-range interactions play an important role in the phase transition from conductive ferromagnetic to nonconductive dielectric paramagnetic state of the manganite in its Curie point.