Abstract
Structural and magnetic properties of La0.67 Ca0.33−x Sr x MnO3 (x = 0.06, 0.07, 0.08) manganites synthesized using the solid-state reaction method were investigated. Rietveld refinement of the X-ray diffraction patterns shows that all our samples crystallize in the orthorhombic structure with Pbnm space group. The temperature dependence of magnetization reveals that all the samples exhibit a ferromagnetic (FM) to paramagnetic (PM) transition at temperatures of 279 K for La0.67 Ca0.27Sr0.06MnO3, 286 K for La0.67Ca0.26Sr0.07MnO3, and 293 K for La0.67Ca0.25 Sr0.08MnO3. Using Arrot plots, the phase transition from FM to PM is found to be of second order. The maximum of themagnetic entropy change (−ΔS M) is found to be 3.37, 2.74, and 2.60 J kg−1 K−1 for x = 0.06, 0.07, and 0.08 under a magnetic field change of 3 T. The relative cooling power (RCP-1) for La0.67Ca0.33−x Sr x MnO3 sample is 152, 162, and 164 J kg−1 for x = 0.06, 0.07, and 0.08. According to these results, these kinds of samples are promising materials for magnetic refrigerants in the room-temperature region.
Similar content being viewed by others
References
Gamzatov, A.G., Batdalov, A.B., Kaul, A.R., Mel’nikov, O.V.: Correlation of electrical, magnetic, and thermal properties of the La0.85Ag0.15MnO3 manganite near the phase transition temperature. Phys Solid State 53, 182–188 (2001)
Wang, Z.H., Shen, B.G., Tang, N., Cai, J.W., Ji, T.H., Zhao, J.G., Zhan, W.S., Che, G.C., Dai, S.Y., Dickon, H.L.: Colossal magnetoresistance in cluster glass-like insulator La0.67Sr0.33(Mn0.8Ni0.2)O3. J. Appl. Phys. 85, 5399–5401 (1999)
Guo, Z.B., Du, Y.W., Zhu, J.S., Huang, H., Ding, W.P., Feng, D.: Large magnetic entropy change in perovskite-type manganese oxides. Phys. Rev. Lett. 78, 1143–1145 (1996)
Dinesen, A.R., Linderoth, S., Morup, S.: Direct and indirect measurement of the magnetocaloric effect in La0.67Ca0.33−x Sr x MnO3±δ . J. Phys. Condens. Matter 17, 6257–6269 (2005)
MAUD Tutorial Version 2.0, Lutterotti, L. , MAUD: http://www.ing.unitn.it/~maud/tutorial.html., Accessed 4 July 2014
Sun, Y., Xu, X., Zhang, Y.: Large magnetic entropy change in the colossal magnetoresistance material La0.67Ca0.33MnO3. J. Magn. Magn. Mater 219, 183–185 (2000)
Arayedh, B., Kallel, S., Kallel, N., Peña, O.: Influence of non-magnetic and magnetic ions on the magnetocaloric properties of La0.7Sr0.3Mn0.9Mn0.1O3 doped in the Mn sites by M = Cr, Sn, Ti. J. Magn. Magn. Mater 361, 68–73 (2014)
Yang, H., Zhang, P., Wu, Q., Ge, H., Pan, M.J.: Effect of monovalent metal substitution on the magnetocaloric effect of perovskite manganites Pr0.5Sr0.3 M 0.2MnO3 (M = Na, Li,K and Ag). J. Magn. Magn. Mater 324, 3727–3730 (2012)
Fan, J., Ling, L., Hong, B., Pi, L., Zhang, Y.: Magnetocaloric effect in perovskite manganite Nd0.6La0.1Sr0.3MnO3. J. Magn. Magn. Mater 321, 2838–2841 (2009)
Mbarek, H., M’nasri, R., Cheikhrouhou-Koubaa, W., Cheikhrouhou, A.: Magnetocaloric effect near room temperature in (1-y)La0.8Ca0.05 K 0.15MnO3/yLa0.8 K 0.2MnO3 composites. Phys. Status Solidi 211, 975–979 (2014)
Jemaa, F.B., Mahmood, S., Ellouze, M., Hlil, E.K., Halouani, F., Bsoul, I., Awawdeh, M.: Structural, magnetic and magnetocaloric properties of La0.67Ba0.22Sr0.11Mn1−x Fe x O3 nanopowders. J. Magn. Magn. Mater, 121–130 (2014)
Tishin, A. M., Spichkin, Y. I.: The Magnetocaloric Effect and Its Applications (Bristol, Institute of Physics Publishing), 405–407 (2003)
Álvarez-Alonso, P., Santos, J.D., Pérez, M.J., Sánchez-Valdes, C.F., Sánchez Llamazares, J.L., Gorria, P.: The substitution effect of chromium on the magnetic properties of (Fe1−x Cr x )80Si6 B 14 metallic glasses (0.02 ≤ x ≤ 0.014). J. Magn. Magn. Mater, 75–78 (2013)
Acknowledgments
We thank CONACYT (México) for the support given to carry out this work. Thanks also to L.E.S.D. Gerardo Gabriel López Rocha of Physics Institute of the Universidad Autónoma de San Luis Potosí, SLP, México, for technical support.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Hernández-González, E.L., Palomares-Sánchez, S.A., Elizalde Galindo, J.T. et al. Magnetocaloric Effect Near Room Temperature of La0.67Ca0.33−x Sr x MnO3 (x = 0.06, 0.07, 0.08) Manganites. J Supercond Nov Magn 28, 1635–1638 (2015). https://doi.org/10.1007/s10948-014-2932-2
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10948-014-2932-2