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The magnetocaloric effect is calculated for La1-xCexMnO3 system near a phase transition from ferromagnetic to paramagnetic state as a function of temperature. It is suggested by the results that La1-xCexMnO3 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.


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Magnetocaloric effect in La1-xCexMnO3

Show Author's information Mahmoud A. HAMADa,b( )
Physics Department, College of Science, Al Jouf University, Al Jouf, Skaka, P. O. Box 2014, Saudi Arabia
Physics Department, Faculty of Science, Tanta University, Egypt

Abstract

The magnetocaloric effect is calculated for La1-xCexMnO3 system near a phase transition from ferromagnetic to paramagnetic state as a function of temperature. It is suggested by the results that La1-xCexMnO3 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.

Keywords:

ceramics, magnetic materials, phase transition, thermodynamic properties
Received: 20 December 2014 Revised: 09 March 2015 Accepted: 23 March 2015 Published: 04 July 2015 Issue date: September 2015
References(30)
[1]
Hamad MA. Lanthanum concentration effect of magnetocaloric properties in LaxMnO3−δ. J Supercond Nov Magn 2015, 28: 173–178.
[2]
Hamad MA. Magnetocaloric effect in La0.7Ca0.2Sr0.1MnO3/Pd composites prepared by chemical plating. Journal of Applied Physical Science International 2015, 3: 92–98.
[3]
Hamad MA. Detecting giant electrocaloric properties of ferroelectric SbSI at room temperature. J Adv Dielect 2013, 4: 1350008.
[4]
Hamad MA. Magnetocaloric effect in Sr2FeMoO6/Ag composites. Processing and Application of Ceramics 2015, 9: 11–15.
[5]
Hamad MA. Magnetocaloric effect in (001)-oriented MnAs thin film. J Supercond Nov Magn 2014, 27: 263–267.
[6]
Hamad MA. Calculations of the low-field magnetocaloric effect in Fe4MnSi3Bx. J Supercond Nov Magn 2015, 28: 2223–2227.
[7]
Hamad MA. Monte Carlo calculations of magnetic heat capacity of La0.7Sr0.3-xMnO3-d. J Supercond Nov Magn 2015, .
[8]
Hamad MA. Effects of addition of rare earth on magnetocaloric effect in Fe82Nb2B14. J Supercond Nov Magn 2015, .
[9]
Hamad MA. Magnetocaloric effect in La0.65-xEuxSr0.35MnO3. Phase Transit 2014, 87: 460–467.
[10]
Hamad MA. Simulation of magnetocaloric effect in La0.7Ca0.3MnO3 ceramics fabricated by fast sintering process. J Supercond Nov Magn 2014, 27: 269–272.
[11]
Hamad MA. Giant isothermal entropy change In (111)-oriented PMN–PT thin film. J Adv Dielect 2014, 4: 1450026
[12]
Hamad MA. Theoretical investigations on electrocaloric properties of (111)-oriented PbMg1/3Nb2/3O3 single crystal. J Adv Ceram 2013, 2: 308–312.
[13]
Hamad MA. Magnetocaloric effect in La1.25Sr0.75MnCoO6. J Therm Anal Calorim 2014, 115: 523–526.
[14]
Debnath JC, Zeng R, Kim JH, et al. Improvement of refrigerant capacity of La0.7Ca0.3MnO3 material with a few percent Co doping. J Magn Magn Mater 2011, 323: 138–143.
[15]
Hamad MA. Magnetocaloric properties of La0.6Ca0.4 MnO3. J Therm Anal Calorim 2013, 113: 609–613.
[16]
Tang W, Lu W, Luo X, et al. Particle size effects on La0.7Ca0.3MnO3: Size-induced changes of magnetic phase transition order and magnetocaloric study. J Magn Magn Mater 2010, 322: 2360–2368.
[17]
Hamad MA. Magnetocaloric effect in nanopowders of Pr0.67Ca0.33FexMn1-xO3. J Supercond Nov Magn 2014, 27: 223–227.
[18]
Radaelli PG, Cox DE, Marezio M, et al. Simultaneous structural, magnetic, and electronic transitions in La1−xCaxMnO3 with x = 0.25 and 0.50. Phys Rev Lett 1995, 75: 4488.
[19]
Ibarra MR, Algarable PA, Marquina C, et al. Large magnetovolume effect in yttrium doped La–Ca–Mn–O perovskite. Phys Rev Lett 1995, 75: 3541.
[20]
Hamad MA. Prediction of energy loss of Ni0.58Zn0.42Fe2O4 nanocrystalline and Fe3O4 nanowire arrays. Jpn J Appl Phys 2010, 49: 085004.
[21]
Hamad MA. Calculations on nanocrystalline CoFe2O4 prepared by polymeric precursor method. J Supercond Nov Magn 2013, 26: 669–673
[22]
Hamad MA. Magnetocaloric effect in La0.7Sr0.3MnO3/ Ta2O5 composites. J Adv Ceram 2013, 2: 213–217.
[23]
Gebhardt JR, Roy S, Ali N. Colossal magnetoresistance in Ce doped manganese oxides. J Appl Phys 1999, 85: 5390.
[24]
Phan M-H, Tian S-B, Yu S-C, et al. Magnetic and magnetocaloric properties of La0.7Ca0.3−xBaxMnO3 compounds. J Magn Magn Mater 2003, 256: 306–310.
[25]
Zener C. Interaction between the d shells in the transition metals. Phys Rev 1951, 81: 440–444.
[26]
Zener C. Interaction between the d-shells in the transition metals. II. Ferromagnetic compounds of manganese with perovskite structure. Phys Rev 1951, 82: 403–405.
[27]
Guo ZB, Du YM, Zhu JS, et al. Large magnetic entropy change in perovskite-type manganese oxides. Phys Rev Lett 1997, 78: 1142.
[28]
Hamad MA. Magneto-caloric effect in Ge0.95Mn0.05 films. J Supercond Nov Magn 2013, 26: 449–453.
[29]
Hamad MA. Magnetocaloric effect in La1-xCdxMnO3. J Supercond Nov Magn 2013, 26: 3459–3462.
[30]
Hamad MA. Magnetocaloric effect in polycrystalline Gd1-xCaxBaCo2O5.5. Mater Lett 2012, 82: 181–183.
Publication history
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Publication history

Received: 20 December 2014
Revised: 09 March 2015
Accepted: 23 March 2015
Published: 04 July 2015
Issue date: September 2015

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© The author(s) 2015

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