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Magnetocaloric and Colossal Magnetoresistance Effect in Layered Perovskite La_(1.4) Sr_(1.6)Mn_2O_7 被引量:3
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作者 li'an han Changle Chen 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2010年第3期234-236,共3页
Magnetocaloric and colossal magnetoresistance effects of the layered perovskite La 1.4 Sr 1.6 Mn 2 O 7 compound have been studied.A broad peak of magnetic entropy change (-△S M) is found above the Curie temperature... Magnetocaloric and colossal magnetoresistance effects of the layered perovskite La 1.4 Sr 1.6 Mn 2 O 7 compound have been studied.A broad peak of magnetic entropy change (-△S M) is found above the Curie temperature (T C =120 K),which can be associated with the existence of two-dimensional short range ferromagnetic order.Additionally,the curvilinear shape of-△S M for layered perovskite is quite different from that of the Ln 1-x A x MnO 3 probably arising from magnetocrystalline anisotropy.At the same time,a wide peak of colossal magnetoresitance effect near T C is found in the layered provskite La 1.4 Sr 1.6 Mn 2 O 7. 展开更多
关键词 Magnetocaloric effect Layered perovskite Colossal magnetoresistance
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