Magnetocaloric effect in La1.25Sr0.75MnCoO6

2015

J Supercond Nov Magn

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In this work , Monte Carlo method is used with Ising model to simulate magnetization versus temperature of La 0.7 Sr 0.3−x MnO 3−δ . The simulated magnetization variation versus temperature is in a good agreement with the available experimental data. The calculations showed that the sample with x = 0.10 has the smallest amplitude of magnetic heat capacity peak. Moreover, the magnetic heat capacity increases with increasing x when x > 0.10.

Section: Introductionmentioning

confidence: 99%

Monte Carlo Calculations of Magnetic Heat Capacity of La0.7Sr0.3-x MnO3-d

2015

J Supercond Nov Magn

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“…Recently, much attention has been paid to studies on the magnetocaloric effect (MCE) and electrocaloric effect, because the refrigeration based on these effects is expected to be a promising alternative technology to the conventional gas compression refrigeration due to its higher energy efficiency and friendly environment [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Characterization and application of the magnetic properties of magnetic materials become more and more significant as magnetoelectronic devices for the level reliability [16,17].…”

Section: Introductionmentioning

confidence: 99%

Great Magnetocaloric Effect of La0.27Nd0.4Ca0.33MnO3

2015

J Supercond Nov Magn

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A magnetocaloric effect has been investigated in the La 0.27 Nd 0.4 Ca 0.33 MnO 3 . The results show that the maximum magnetic entropy change of La 0.27 Nd 0.4 Ca 0.33 MnO 3 in the magnetic field change of 5.0 T is 10.05 J.kg −1 . K −1 at 135 K, which is nearly equal Gd in the same magnetic field change. In addition, magnetic entropy change distribution is uniform, which is desirable for an Ericson cycle magnetic refrigerator. Moreover, it is showed that as magnetocaloric effect occurs in La 0.27 Nd 0.4 Ca 0.33 MnO 3 , an accurate control of the temperature change could be achieved by fine tuning several magnetic fields. This advantage should result in more efficient and accurate cooling devices.

“…Recently, the materials showing pronounced magnetocaloric effect (MCE) and electrocaloric effect (ECE) can be used as alternatives to the conventional gas [1][2][3][4][5][6][7][8][9][10][11][12][13]. This newly refrigeration has the advantages of high efficiency of energy transformation, environmental protection, and low cost.…”

Section: Introductionmentioning

confidence: 99%

Magnetocaloric effect in La1-x Ce x MnO3

2015

J Adv Ceram

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Abstract:The magnetocaloric effect is calculated for La 1x Ce x MnO 3 system near a phase transition from ferromagnetic to paramagnetic state as a function of temperature. It is suggested by the results that La 1x Ce x MnO 3 material can be utilized as the working material in an active magnetic regenerative refrigerator with large temperature span, for its significant entropy change upon the application of a magnetic field and the easily tuned Curie temperature.