Abstract.
The Cr-doped rare-earth manganites Nd0.5Ca0.5Mn1−x Cr x O3 (x = 0.03, 0.05, 0.10) are studied by electron magnetic resonance (EMR) and magnetization measurements in the paramagnetic as well as in the ferromagnetic phase. The magnetization measurements show that the charge-ordered antiferromagnetic phase decreases at the expense of ferromagnetic metallic phase and for Cr doping of x = 0.1, the charge-ordered phase melts completely. The EMR shows multiple signals for all three compositions in the ferromagnetic phase indicative of an anisotropic ferromagnetic phase. The difference between the shift of the high-field and low-field signals decreases with Cr doping, indicating that the magnetic anisotropy decreases with the Cr doping. In the paramagnetic phase the EMR line width follows Causa's model as observed in other colossal magnetoresistant manganites.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Vanitha, P.V., Singh, R.S., Natarajan, S., Rao, C.N.R.: Solid State Commun. 109, 135 (1999)
Raveau, B., Maignan, A., Martin, C.: J. Solid State Chem. 130, 162 (1997)
Barnabe, A., Maignan, A., Hervieu, M., Damay, F., Martin, C., Raveau, B.: Appl. Phys. Lett. 71, 3907 (1997)
Moritomo, Y., Machida, A., Mori, S., Yamamoto, N., Nakamura, A.: Phys. Rev. B 60, 9220 (1999)
Mori, S., Shoji, R., Yamamoto, N., Asaka, T., Matusi, Y., Machida, A., Moritomo, Y., Katsufuji, T.: Phys. Rev. B 67, 012403 (2003)
Carneiro, A.S., Fonseca, F.C., Jardim, R.F., Kimura, T.: J. Appl. Phys. 93, 8074 (2003)
Dagotto, E., Hotta, T., Moreo, A.: Phys. Rep. 344, 1 (2001)
Rivadulla, F., Freita-Alvite, M., Lopez-Quintela, M.A.: J. Appl. Phys. 91, 2 (2002)
Zheng, L., Xu, X., Pi, L., Zhang, Y.: Phys. Rev. B 62, 1193 (2000)
Shames, A.I., Rozenberg, E., Gorodetsky, G., Mukovskii, Ya.M.: Phys. Rev. B 68, 17402 (2003)
Joshi, J.P., Sood, A.K., Bhat, S.V., Parashar, S., Raju, A.R., Rao, C.N.R.: J. Magn. Magn. Mater. 279, 91 (2004)
Joy, P.A., Date, S.K.: J. Magn. Magn. Mater. 218, 229 (2000)
Joshi, J.P., Gupta, R., Sood, A.K., Bhat, S.V., Raju, A.R., Rao, C.N.R.: Phys. Rev. B 65, 024410 (2001)
Gupta, R., Joshi, J.P., Bhat, S.V., Sood, A.K., Rao, C.N.R.: J. Phys. Condens. Matter 12, 6919 (2000)
Joshi, J.P., Amar, A.R., Bhagwat, R., Sarangi, S., Sharma, A., Bhat, S.V.: Physica B Condens. Matter 349, 35 (2004)
Sharma, A., Sarangi, S., Bhat, S.V.: Phys. Rev. B 73, 035129 (2006)
Causa, M.T., Tovar, M., Caneiro, A., Prado, F., Ibanez, G., Ramos, C.A., Butera, A., Alascio, B., Obradors, X., Pinol, S., Rivadulla, F., Vazquez-Vazquez, C., Lopez-Quintela, A., Rivas, J., Tokura, Y., Oseroff, S.B.: Phys. Rev. B 58, 3233 (1998)
Rivadulla, F., Lopez-Quintela, M.A., Hueso, L.E., Rivas, J., Causa, M.T., Ramos, C., Sanchez, R.D., Tovar, M.: Phys. Rev. B 60, 11922 (1999)
Author information
Authors and Affiliations
Additional information
Authors' address: Ajay Sharma, Department of Physics, Indian Institute of Science, Bangalore, India
Rights and permissions
About this article
Cite this article
Sharma, A., Bhat, S. Charge-Ordered Antiferromagnetic to Ferromagnetic Phase Transition in Cr-Doped Nd0.5Ca0.5Mn1−x Cr x O3: EMR and Magnetization Study. Appl Magn Reson 33, 11–17 (2008). https://doi.org/10.1007/s00723-008-0050-7
Received:
Issue Date:
DOI: https://doi.org/10.1007/s00723-008-0050-7