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Magnetic and electric properties of wrinkled manganite films derived by sol‐gel method
Author(s) -
Zhao Bo,
Chen Ying,
Xue Fen,
Guo Xin,
Wang Genshui,
Yang Lihui,
Wang Wensheng,
Dong Xianlin
Publication year - 2017
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.14900
Subject(s) - materials science , electrical resistivity and conductivity , coercivity , curie temperature , composite material , manganite , sol gel , magnetization , crystallite , electric field , thin film , condensed matter physics , magnetic field , nanotechnology , metallurgy , ferromagnetism , electrical engineering , physics , engineering , quantum mechanics
Flat and wrinkled La 0.7 Sr 0.3 MnO 3 ( LSMO ) thin films were prepared by sol‐gel method, respectively, on Si (001) substrates by adjusting heating rate at drying stage. Wrinkled film has larger grains than flat film. Coercive field (about 27 Oe) of wrinkled film is higher than that of flat film, which is much low as around 5 Oe. Compared with flat films, wrinkled films have larger magnetization, higher Curie temperature (334 K) and peak resistivity temperature (243 K), and lower resistivity (0.18 Ohm·cm at 300 K). The introducing of wrinkles is an efficient way to induce compressive stress in sol‐gel derived polycrystalline LSMO films and enhance the magnetic and electric properties.