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《Journal of Non》2005,351(6-7):472-476
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《Journal of Non》2005,351(40-42):3365-3369
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J.S. Amaral P.B. Tavares M.S. Reis J.P. Araújo T.M. Mendonça V.S. Amaral J.M. Vieira 《Journal of Non》2008,354(47-51):5301-5303
Ferromagnetic manganites of general formula (where A is a trivalent rare-earth ion and B is a divalent dopant) are candidates for magnetic cooling applications, since they can present either second- or first-order magnetic phase transitions, and the perovskite structure allows for substantial chemical substitution and tuning of the magnetocaloric properties. The consequent chemical distribution from substitution affects the magnetic and magnetocaloric properties of the compound. The change of relative cooling power with chemical disorder is discussed by the use of the molecular mean-field model. We present experimental results of the ferromagnetic, second-order phase transition system. 相似文献
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《Journal of Non》2007,353(47-51):4380-4383
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