Abstract
The temperature evolution of the magnetic structure of multiferroics Tb1 − x Ce x Mn2O5 (x = 0, 0.20, 0.25) has been investigated using the neutron scattering methods. It has been found that, despite the qualitative similarity of the magnetic states and the series of phase transitions for pure TbMn2O5 (TMO) and doped crystals Tb1 − x Ce x Mn2O5 (TCMO, x = 0.20 and 0.25), there are significant differences in their properties. In contrast to TMO, where there are three magnetic phases, TCMO can include two magnetic phases that coexist in a wide temperature range and exhibit a rather wide temperature hysteresis. One of these phases with wave vector k 1 = (0.5, 0, k z1), k z1 = 0.25, is commensurate and arises at temperatures below T N ∼ 39 K (for x = 0.2) and T N ∼ 38 K (x = 0.25). The second phase is incommensurate with wave vector k 2 = (1/2, 0, k z2), k z2 = 0.256(2), and appears upon cooling at T = 21 K (x = 0.2) and T = 19 K (x = 0.25). Upon further cooling to 16 K, the component k z2 increases to 0.292(2) and then remains constant. The component k z1 increases to the value of 0.280(2) upon cooling in the range from 15 to 10 K and then remains constant down to 1.5 K. With an increase in the temperature, the components k z1 and k z2 undergo reverse changes to their initial values, but these changes occur at temperatures 7 K higher than those observed with a decrease in the temperature. For TMO, two phases also coexist, but the temperature hysteresis in this case is considerably smaller than for TCMO. This is explained by different densities of domain walls and different sizes of domains in pure and doped crystals.
Similar content being viewed by others
References
I. Kagomiya, K. Kohn, and T. Uchiyama, Ferroelectrics 280, 131 (2002).
G. R. Blake, L. C. Chapon, P. G. Radaelli, S. Park, N. Hur, S-W. Cheong, and J. Rodrigues-Carvajal, Phys. Rev. B: Condens. Matter 71, 214402 (2005).
D. Higashiyama, S. Miyasaka, and Y. Tokura, Phys. Rev. B: Condens. Matter 72, 064421 (2005).
Y. Bodenthin, U. Staub, M. García-Fernández, M. Janoschek, J. Schlappa, E. I. Golovenchits, V. A. Sanina, and S. G. Lushnikov, Phys. Rev. Lett. 100, 027201 (2008).
L. C. Chapon, G. R. Blake, M. J. Gutmann, S. Park, N. Hur, P. G. Radaelli, and S.-W. Cheong, Phys. Rev. Lett. 93, 177402 (2004).
K. Saito and K. Kohn, J. Phys.: Condens. Matter 7, 2855 (1995).
E. I. Golovenchits, N. V. Morozov, V. A. Sanina, and L. M. Sapozhnikova, Sov. Phys. Solid State 34(1), 56 (1992).
J. A. Alonso, M. T. Casais, M. J. Martinez-Lope, J. L. Martinez, and M. T. Fernandez-Diaz, J. Phys.: Condens. Matter 9, 8515 (1997).
J. Van den Brink and D. I. Khomskii, J. Phys.: Condens. Matter 20, 434217 (2008).
R. D. Shannon, Acta Crystallogr., Sect. A: Cryst. Phys., Diffr., Theor. Gen. Crystallogr. 32, 751 (1976).
Z. H. Sun, B. L. Cheng, S. Dai, K. J. Jin, Y. L. Zhou, Y. B. Lu, Z. H. Chen, and G. Z. Yang, J. Appl. Phys. 99, 084105 (2006).
L. P. Gor’kov, Phys.-Usp. 41(6), 589 (1998).
M. Yu. Kagan and K. I. Kugel’, Phys.-Usp. 44(6), 553 (2001).
V. A. Sanina, E. I. Golovenchits, V. G. Zalesskii, S. G. Lushnikov, M. P. Scheglov, S. N. Gvasaliya, A. Savvinov, R. S. Katiyar, H. Kawaji, and T. Atake, Phys. Rev. B: Condens. Matter 80, 224401 (2009).
V. A. Sanina, E. I. Golovenchits, V. G. Zalesskii, and M. P. Scheglov, J. Phys.: Condens. Matter 23, 456003 (2011).
V. A. Sanina, E. I. Golovenchits, and V. G. Zalesskii, J. Phys.: Condens. Matter 24, 346002 (2012).
V. A. Sanina, L. M. Sapozhnikova, E. I. Golovenchits, and N. V. Morozov, Sov. Phys. Solid State 30(10), 1736 (1988).
I. Urcelay, J. L. Garcia-Munoz, I. V. Golosovsky, I. A. Zobkalo, and E. Ressouche (in press).
C. Wilkinson, P. J. Brown, and T. Chatterji, Phys. Rev. B: Condens. Matter 84, 224422 (2011).
J. Koo, S. Ji, T.-H. Jang, Y. H. Jeong, K.-B. Lee, T. Y. Koo, S. A. Kim, and C.-H. Lee, J. Korean Phys. Soc. 51, 562 (2007).
Y. Noda, H. Kimura, M. Fukunaga, S. Kobayashi, I. Kagomiya, and K. Kohn, J. Phys.: Condens. Matter 20, 434206 (2008).
P. G. Radaelli and L. C. Chapon, J. Phys.: Condens. Matter 20, 434213 (2008).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © I.A. Zobkalo, S.V. Gavrilov, V.A. Sanina, E.I. Golovenchits, 2014, published in Fizika Tverdogo Tela, 2014, Vol. 56, No. 1, pp. 57–62.
Rights and permissions
About this article
Cite this article
Zobkalo, I.A., Gavrilov, S.V., Sanina, V.A. et al. Temperature hysteresis of magnetic phase transitions in Tb1 − x Ce x Mn2O5 (x = 0, 0.20, 0.25). Phys. Solid State 56, 51–56 (2014). https://doi.org/10.1134/S1063783414010405
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063783414010405