Abstract
We have investigated the successive magnetic phase transitions of the A-site ordered perovskite LaMn3Cr4O12 by measuring 139La nuclear magnetic resonance (NMR) spectra. The successive magnetic transitions are revealed by a very small but clear increase in the full width at half maximum (FWHM) of the 139La NMR signal at T M2 = 150 K and by the disappearance of the signal due to the line broadening at temperatures below T M1 = 50 K. These two magnetic transitions are associated with independent orderings within the Cr-site sublattice at T M2 and within the Mn-site sublattice at T M1. Regarding the magnetic structure of the Cr-site sublattice at temperatures below T M2, the cancellation of internal fields at the La site, ruling out ferromagnetic and multi-q antiferromagnetic structures, is consistent with the typical antiferromagnetic structure for perovskites, such as G-, A- and C-type orders. The uncanceled internal field at the La site at temperatures below T M1 is also consistent with these typical antiferromagnetic structures in the Mn-site sublattice. The differences in the temperature dependences of the Knight shift K(T) and the bulk susceptibility χ(T) are consistently explained by the independent magnetic orderings of the Cr- and the Mn-site sublattices and the cancellation of internal field originating from the Cr-site sublattice at the La site at temperatures below T M2.
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D. Akahoshi, M. Uchida, Y. Tomioka, T. Arima, Y. Matsui and Y. Tokura, Phys. Rev. Lett. 90, 177203 (2003).
Y. Ueda and T. Nakajima, J. Phys.: Condens. Matter 16, S573 (2004).
Y. Shimakawa and T. Saito, Phys. Status Solidi B 249, 423 (2012).
Y. Long, T. Saito, M. Mizumaki, A. Agui and Y. Shimakawa, J. Am. Chem. Soc. 131, 16244 (2009).
K. Tanaka, I. Yamada, M. Azuma, M. Takano and Y. Shimakawa, Phys. Rev. B 76, 024429 (2007).
I. Yamada, K. Tanaka, N. Hayashi, S. Shinohara, M. Azuma, S. Mori, S. Muranaka, Y. Shimakawa and M. Takano, Angew. Chem., Int. Ed. 47, 7032 (2008).
S. Lv, H. Li, X. Liu and J. Meng, J. Appl. Phys. 110, 023711 (2011).
A. Prodi, E. Gilioli, R. Cabassi, F. Bolzoni, F. Licci, Q. Huang, J. W. Lynn, M. Affronte, A. Gauzzi and M. Marezio, Phys. Rev. B 79, 085105 (2009).
E. O. Wollan and W. C. Koehler, Phys. Rev. 100, 545 (1955).
A. Prodi, G. Allodi, E. Gilioli, F. Licci, M. Marezio, F. Bolzoni, A. Gauzzi and R. De Renzi, Physica B 374–375, 55 (2006).
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Kawasaki, Y., Takase, S., Kishimoto, Y. et al. NMR study of successive magnetic transitions in the A-site ordered perovskite LaMn3Cr4O12 . Journal of the Korean Physical Society 63, 640–643 (2013). https://doi.org/10.3938/jkps.63.640
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DOI: https://doi.org/10.3938/jkps.63.640