PL EN


Preferences help
enabled [disable] Abstract
Number of results
2012 | 122 | 1 | 162-166
Article title

Influence of Nonstoichiometry on Magnetocaloric Effect in (La_{0.7}Ca_{0.3})_{1 - x}Mn_{1+x}O_3

Content
Title variants
Languages of publication
EN
Abstracts
EN
Magnetocaloric effect in (La_{0.7}Ca_{0.3})_{1 - x}Mn_{1 + x}O_3 manganites with x = 0, 0.1, 0.2 has been investigated. It is found a strong influence of nonstoichiometry caused by excessive manganese on the magnetic entropy change. The magnetocaloric effect was evaluated from the isothermal curves of spontaneous magnetization versus the applied magnetic field by using the well-known thermodynamical Maxwell relation. The maximum entropy value, | Δ S_{M}^{max} |, near the ferromagnetic-paramagnetic phase transition is shown to increase with the manganese content. The La_{0.56}Ca_{0.24}Mn_{1.2}O_3 manganite exhibits the largest | Δ S_{M}^{max} | value equal to 3.09 J kg^{-1} K^{-1} at 15 kOe near T_{C} = 267 K. The magnetocaloric effect values obtained allow to propose that the studied manganites are promising materials for future cooling application.
Keywords
EN
Year
Volume
122
Issue
1
Pages
162-166
Physical description
Dates
published
2012-07
received
2011-06-20
(unknown)
2012-02-15
References
  • 1. A.P. Ramirez, J. Phys. Condens. Matter. 9, 8171 (1997)
  • 2. J.M.D. Coey, M. Viret, S. von Molnar, Adv. Phys. 48, 167 (1999)
  • 3. V.K. Pecharsky, K.A. Gschneider Jr., J. Magn. Magn. Mater. 200, 44 (1999)
  • 4. Z.M. Wang, G. Ni, Q.Y. Xu, H. Sang, Y.W. Du, J. Appl. Phys. 90, 5689 (2001)
  • 5. M.H. Phan, S.B. Tian, S.C. Yu, A.N. Ulyanov, J. Magn. Magn. Mater. 256, 306 (2003)
  • 6. K.A. Gschneidner Jr., V.K. Pecharsky, A.O. Tsokol, Rep. Prog. Phys. 68, 1479 (2005)
  • 7. D.T. Ganh, M.S. Islam, F.A. Khan, D.L. Minh, N. Chau, J. Magn. Magn. Mater. 310, 2826 (2007)
  • 8. M.H. Phan, S.C. Yu, J. Magn. Magn. Mater. 308, 325 (2007)
  • 9. H. Szymczak, R. Szymczak, Mater. Sci. Poland 26, 807 (2008)
  • 10. J. Zhang, N. Li, M. Feng, B. Pan, H. Li, J. Alloys Comp. 467, 88 (2009)
  • 11. R. Szymczak, R. Kolano, A. Kolano-Burian, V.P. Dyakonov, H. Szymczak, Acta Phys. Pol. A 117, 203 (2010)
  • 12. V.P. Dyakonov, I. Fita, E. Zubov, E. Pashchenko, V. Mikhaylov, V. Prokopenko, Yu. Bukhantsev, K. Arciszewska, W. Dobrowolski, A. Nabiałek, H. Szymczak, J. Magn. Magn. Mater. 246, 40 (2002)
  • 13. E.E. Zubov, V.P. Dyakonov, H. Szymczak, Zh. Eksp. Teor. Fiz. 122, 1212 (2002) [ JETP 95, 1044 (2002)]
  • 14. V.P. Pashchenko, S.I. Khartsev, O.P. Cherenko, A.A. Chemyakov, Z.A. Samoilenko, A.D. Loiko, V.I. Kamenev, Inorg. Mater. 35, 1294 (1999)
  • 15. V.P. Pashchenko, V.K. Prokopenko, A.A. Shemyakov, V.N. Varyukhin, A.D. Lojko, V.N. Derkachenko, V.P. Dyakonov, H. Szymczak, A. Gladczuk, Metallofyzika/Novejshie Tekhnology 22, 18 (2000)
  • 16. G.D. Tang, D.L. Hou, W. Chen, P. Hao, G.H. Liu, S.P. Liu, X.L. Zhang, L.Q. Xu, Appl. Phys. Lett. 91, 152503 (2007)
  • 17. M.F. Hundley, J.J. Neumeier, Phys. Rev. B 55, 11511 (1997)
  • 18. I.O. Troyanchuk, V.A. Khomchenko, S.N. Pastushonok, O.A. Novitsky, V.A. Pavlov, H. Szymczak, J. Magn. Magn. Mater. 303, 147 (2006)
  • 19. D. Abou-Ras, W. Boujalbem, A. Cheikh-Rouhou, J. Pierre, J.P. Renard, L. Reversat, K. Shimizu, J. Magn. Magn. Mater. 233, 147 (2001)
  • 20. M.P. de Jong, I. Bergenti, W. Osikowich, R. Friedlein, V.A. Dediu, C. Taliani, W.R. Salaneck, Phys. Rev. B 73, 052403 (2006)
  • 21. A.N. Ulyanov, D.S. Yang, N. Chau, S.C. Yu, S.I. Yoo, J. Appl. Phys. 103, 07F722 (2008)
  • 22. A.V. Pashchenko, A.A. Shemyakov, V.P. Pashchenko, V.A. Turchenko, V.K. Prokopenko, Yu.F. Revenko, Yu.V. Medvedev, B.M. Éfros, G.G. Levchenko, Phys. Solid State 51, 1193 (2009)
  • 23. A. Arrott, J.E. Noakes, Phys. Rev. Lett. 19, 786 (1967)
  • 24. Y. Sun, M.B. Salamon, S.H. Chun, J. Appl. Phys. 92, 3235 (2002)
  • 25. M. Bejar, R. Dhahri, E. Dhahri, M. Balli, E.K. Hlil, J. Alloys Comp. 442, 136 (2007)
  • 26. H. Gencer, S. Atalay, H.I. Adiguzel, V.S. Kolat, Physica B, Condens. Matter 375, 326 (2005)
  • 27. M.H. Phan, S.C. Yu, N.H. Hur, Y.H. Jeong, J. Appl. Phys. 96, 1154 (2004)
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.bwnjournal-article-appv122n1p32kz
Identifiers
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.