Abstract
The Griffiths phase has been investigated in terms of oxygen vacancy in polycrystalline samples La0.75Ca0.15MnO3 (LCMO-1) and La0.75Ca0.15MnO3−Δ (LCMO-2). The latter of the two samples is prepared by annealing the former (with existence of Griffiths phase) in N2 atmosphere. Experimental results demonstrate that for the latter sample Griffith’s phase disappears (according to its obeying Curie–Weiss law in the temperature dependence of inverse susceptibility) due to redistribution of magnetic disorder between Mn3+ and Mn4+ ions induced by the increment of crystal lattice structure parameters. XRD patterns of the two samples show an increase of crystal lattice structure parameters. X-ray absorption fine structure data manifest that the degree of structural disorder in LCMO-2 sample is higher than that of LCMO-1, indicating that local structural disorder in this system is not the key role to affect the existence of Griffiths phase, while magnetic distribution/disorder is an important character.
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References
Salamon, M.B., Lin, P., Chun, S.H.: Phys. Rev. Lett. 88, 197203 (2002)
Salamon, M.B., Chun, S.H.: Phys. Rev. B 68, 014411 (2003)
Griffiths, R.B.: Phys. Rev. Lett. 23, 17 (1969)
Rama, N., Ramachandra Rao, M.S., Sankaranarayanan, V., Majewski, P., Gepraegs, S., Opel, M., Gross, R.: Phys. Rev. B 70, 224424 (2004)
Rama, N., Opel, M., Sankaranarayanan, V., Gross, R., Ogale, S.B., Venkatesan, T., Ramachandra Rao, M.S.: Phys. Rev. B 70, 224424 (2004)
Yassin, O.A., Mohamed, M.I., Bhatia, S.N.: Phys. Status Solidi B 245, 745 (2008)
Pramanik, A.K., Banerjee, A.: Phys. Rev. B 81, 024431 (2010)
Fan, J., Pi, L., He, Y., Ling, L., Dai, J., Zhang, Y.: J. Appl. Phys. 101, 123910 (2007)
Zhang, H., Chen, L., Li, Y., Liu, H., Chen, Y., Chen, K., Dong, X., Yang, H., Gao, T., Li, Q.: J. Supercond. Nov. Magn. 24, 1665 (2011)
Zabinsky, S.I., Ankudinov, A., Rehr, J.J., Albers, C.: Phys. Rev. B 52, 2995 (1995)
De Léon-Guevara, A.M., Berthet, P., Berthon, J., Millot, F., Revcolevschi, A., Anane, A., Dupas, C., Le Dang, K., Renard, J.P., Veillet, P.: Phys. Rev. B 56, 6031 (1997)
Ju, H.L., Sohn, H.-C., Krishnan, Kannan M.: Phys. Rev. Lett. 79, 3230 (1997)
Saitoh, T., Bocquet, A.E., Mizokawa, T., Namatame, H., Fujimori, A., Abbate, M., Takeda, Y., Takano, M.: Phys. Rev. B 51, 13942 (1995)
X-ray Data Booklet, Lawrence Berkeley National Laboratory, University of California, Berkeley, CA94720
Subías, G., García, J., Proietti, M.G., Blasco, J.: Phys. Rev. B 56, 8183 (1997)
Bridges, F., Downward, L., Neumeier, J.J., Tyson, T.A.: Phys. Rev. B 81, 184401 (2010)
Stern, E.A.: Phys. Rev. B 10, 3027 (1974)
Tozri, A., Dhahri, E., Hlil, E.K.: J. Magn. Magn. Matter. 322, 2516 (2010)
Acknowledgements
This work was supported by the Large Scientific Apparatus United Fund from NSFC and Chinese Academy of Science for the projects 10979016, the doctoral program 2007086092 for higher education, USTC Graduate Student Innovation Fund under Grant No. 20090621S and Jiangsu provincial Graduate Student Scientific Research Innovation Project No. CXLX_0096, and the Scientific Research Foundation of Graduate School of Southeast University No. YBJJ1105. We also thank for the beamtime offered by NSRL and BSRF, respectively.
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Zhang, H., Li, Y., Liu, H. et al. Disappearance of Griffiths Phase in Polycrystalline Sample La0.75Ca0.15MnO3−Δ with Controlling Oxygen Vacancy. J Supercond Nov Magn 25, 2365–2370 (2012). https://doi.org/10.1007/s10948-012-1606-1
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DOI: https://doi.org/10.1007/s10948-012-1606-1