Abstract
The anomalous magnetocaloric effect in singlet rare-earth paramagnets near energy level crossing has been experimentally observed for the first time. The magnetization and differential magnetic susceptibility of Ho1 − x Y x VO4 crystals (x = 0, 0.5) measured along the tetragonal axis in a pulsed magnetic field with various change rates near the crossover field, dH/dt, from 3 × 103 to 2.5 × 102 T/s are compared to the data in static magnetic fields down to 0.1 K. These data indicate the large negative magnetocaloric effect in the pulsed magnetic field, so that the crystal with the initial temperature T 0 = 4.2 K is cooled much lower than 1 K. The experimental data are qualitatively described in the crystal field model with various interactions including hyperfine interactions and with the known interaction parameters.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
M. D. Kuz’min and A. M. Tishin, Cryogenics 32, 545 (1992).
R. Z. Levitin, V. V. Snegirev, A. V. Kopylov, et al., J. Magn. Magn. Mater. 170, 233 (1997).
A. Kirste, M. von Ortenberg, A. A. Demidov, et al., Physica B 336, 335 (2003).
J. E. Battison, A. Kasten, M. J. M. Leask, and J. B. Lowry, J. Phys. C 10, 323 (1977).
B. Bleaney, J. F. Gregg, P. Hansen, et al., Proc. R. Soc. London, Ser. A 416, 63 (1988).
T. Goto, A. Tamaki, T. Fujimura, and H. Unoki, J. Phys. Soc. Jpn. 55, 1613 (1986).
P. Morin, J. Rouchy, and Z. Kazei, Phys. Rev. B 51, 15103 (1995).
B. Bleaney, F. H. N. Robinson, and M. R. Well, Proc. R. Soc. London, Ser. A 362, 179 (1978).
B. Bleaney, Physica 69, 317 (1973).
H. Suzuki, N. Nambudripad, B. Bleaney, et al., J. Phys. (Paris) Colloq. 39, C6–800 (1978).
H. Suzuki, T. Ohtsuka, S. Kawarazaki, et al., Solid State Commun. 49, 1157 (1984).
B. Bleaney, Proc. R. Soc. London, Ser. A 370, 313 (1980).
S. Skanthakumar, C.-K. Loong, L. Soderholm, et al., Phys. Rev. B 51, 12451 (1995).
B. Roessli, P. Fischer, U. Staub, et al., J. Appl. Phys. 75, 6337 (1994).
Z. A. Kazei, A. Kirste, N. P. Kolmakova, et al., J. Magn. Magn. Mater. 224, 76 (2001).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © Z.A. Kazei, V.V. Snegirev, J.-M. Broto, H. Rakoto, 2008, published in Pis’ma v Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2008, Vol. 87, No. 12, pp. 787–791.
Rights and permissions
About this article
Cite this article
Kazei, Z.A., Snegirev, V.V., Broto, J.M. et al. Anomalous magnetocaloric effect in van vleck paramagnet HoVO4 near energy level crossing. Jetp Lett. 87, 687–691 (2008). https://doi.org/10.1134/S0021364008120084
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0021364008120084