Abstract
The local magnetic interaction at the transition metal sites in RMO3 (R=La, Nd; M=Cr, Fe) compounds has been investigated by perturbed angular correlation (PAC) technique using 181Hf→181Ta probe nuclei. The present measurements cover a temperature range from 10 K to 1000 K. Above the respective Neel temperature, each compound shows a unique quadrupolar frequency that decreases linearly with temperature. These interactions were assigned to the radioactive probe substituting Cr or Fe sites. Below TN, a combined electric plus magnetic hyperfine interaction was observed. The magnetic interaction revealed that the super transferred hyperfine fields on 181Ta at the Cr sites in (La,Nd)CrO3 extrapolated to 0 K, are much smaller than the corresponding values at Fe sites in (La,Nd)FeO3. This difference was attributed to different distribution of d electrons in Cr3+ (3d3) and Fe3+ (3d5) ions in each compound. As the fields for Nd compounds are smaller than those for La compounds, the role of rare-earth ions in the magnetism of these oxides is also discussed.
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References
Rearick, T.M., Catchen, G.L., Adams, J.M.: Phys. Rev. B 48, 224–238 (1993)
Catchen, G.L., Evenson, W.E., Allred, D.: Phys. Rev. B 54, R3679–R3682 (1996)
Dogra, R., Junqueira, A.C., Saxena, R.N., Carbonari, A.W., Mestnik-Filho, J., Moralles, M.: Phys. Rev. B 63 (224104) (2001)
Carbonari, A.W., Saxena, R.N., Pendl, W. Jr, Mestnik Filho, J., Attili, R., Olzon-Dionysio, M., de Souza, S.D.: J. Magn. Magn. Mater. 163, 313–321 (1996)
Junqueira, A.C., Carbonari, A.W., Saxena, R.N., Mestnik-Filho, J.: J. Magn. Magn. Mat. 272–276, E1639 (2004)
Junqueira, A.C., Carbonari, A.W., Saxena, R.N., Mestnik-Filho, J., Dogra, R.: J. Phys. Condense Matter 17, 6989–6997 (2005)
Koehler, W.C., Wollan, E.O.: J. Chern. Phys. Solids 2, 100–106 (1957)
Slawinski, W., Przenioslo, R., Sosnowska, I., Suard, E.: J. Phys. Condense Matter 17, 4605–4614 (2005)
Shamir, N., Shaked, H., Shtrikman, S.: Phys. Rev. B 24, 6642–6651 (1981)
Bartolomé, F., Bartolomé, J., Castro, M., Melero, J.J.: Phys. Rev. B 62, 1058–1066 (2000)
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Carbonari, A.W., Cavalcante, F.H.M., Junqueira, A.C., Leite, D.M.T., Saxena, R.N., Mestnik-Filho, J. (2008). Investigation of hyperfine interactions in RMO3 (R =La, Nd; M =Cr, Fe) antiferromagnetic perovskite oxides using PAC spectroscopy. In: Pasquevich, A., Rentería, M., Saitovitch, E.B., Petrilli, H. (eds) HFI/NQI 2007. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-85320-6_44
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DOI: https://doi.org/10.1007/978-3-540-85320-6_44
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