Specific heat and low-field magnetocaloric effect in A-site ordered PrBaMn2O6 manganite |
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| Authors: | AM Aliev AB Batdalov VS Kalitka AR Kaul |
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| Institution: | 1. Laboratory of Low Temperature Physics , Amirkhanov Institute of Physics of Dagestan Scientific Center of RAS , Makhachkala 367003, Russia;2. Material Science Department , Moscow State University , 119899 Moscow, Russia |
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| Abstract: | The specific heat and magnetocaloric effect (MCE) of A-site ordered PrBaMn2O6 manganite have been studied. The anomalies caused by the ferromagnetic (FM) and antiferromagnetic (AFM) phase transitions are revealed in the specific heat curve. Direct and inverse MCE are observed at the Curie and Néel points correspondingly. A value of the inverse MCE in the heating run is smaller than in the cooling regime. We attribute this effect to the competition between FM and AFM interactions. A significant advantage of PrBaMn2O6 as a magnetocaloric material is an MCE spanning a broad range of temperature with a maximum at room temperature. |
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| Keywords: | manganite magnetocaloric effect specific heat |
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