Abstract
We investigated the structural and the mechanical properties of single crystals of the diluted magnetic semiconductor (DMS) Cd1−x−y Mn x Cr y Te (x = 0.37, 0 ≤ y ≤ 0.03) grown by using the vertical Bridgman method. High-temperature X-ray diffraction (XRD) and microhardness measurements were carried out during heating processes at temperatures from room temperature to 750 K. The lattice constants increased with increasing temperature whereas the lattice constants decreased with increasing Cr composition y. The hardness of the Cd1−x−y Mn x Cr y Te crystal increased exponentially with decreasing temperature for T ≤ 600 K, and it remained constant for T ≥ 700 K. The Vickers hardness, H V , decreased with increasing temperature and increased with increasing Cr composition y. The activation energy for the dislocation motion was determined from the relation between temperature and hardness.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
H. Ohno, Science 281, 951 (1998).
K. Olejník, M. H. S. Owen, V. Novák, J. Mašek, A. C. Irvine, J. Wunderlich and T. Jungwirth, Phys. Rev. B 78, 054403 (2008).
J. Blinowski, P. Kacman and J. A. Majewski, Phys. Rev. B 53, 9524 (1996).
K. Sato and H. Katayama-Yoshida, Phys. Status Solidi B 229, 673 (2002).
S. Shen, X. Liu, Y. J. Cho, J. K. Furdyna, M. Dobrowolska, Y. H. Hwang and Y. H. Um, Appl. Phys. Lett. 94, 142507 (2009).
J. K. Furdyna, J. Appl. Phys. 64, R29 (1988).
J. L. He, W. Z. Li and H. D. Li, Appl. Phys. Lett. 69, 1402 (1996).
M. D. Drory, J.W. Ager III, T. Suski, I. Grzegory and S. Porowski, Appl. Phys. Lett. 69, 4044 (1996).
Y. H. Hwang, H. K. Km, S. Cho, Y. H. Um and H. Y. Park, J. Cryst. Growth 249, 391 (2003).
W. Giriat and J. K. Furdyna, in Semiconductors and Semimetals, edited by J. K. Furdyna and J. Kossut (Academic, New York, 1988), Vol. 25.
N. A. Goryunova, A. S. Borshchevskii and P. N. Tretiakov, Semiconductors and Semimetals (Academic, New York, 1968), Vol. 4, p. 6.
A. Sher, A. B. Chen and W. E. Spicer, Appl. Phys. Lett. 46, 54 (1985).
P. Hassen and H. A. Alexander, Solid State Phys. 22, 27 (1968).
C. R. Barrett, W. D. Nix and A. S. Tetelman, The Principles of Engineering Materials (Englewood Cliffs, NJ, 1973).
B. Henderson, Defects in Crystalline Solids (Russak Com-pany Inc., New York, 1972), p. 162.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Hwang, Y., Um, Y. Temperature dependences of the structural and the mechanical properties of a CdMnCrTe quaternary alloy. Journal of the Korean Physical Society 61, 1683–1686 (2012). https://doi.org/10.3938/jkps.61.1683
Received:
Published:
Issue Date:
DOI: https://doi.org/10.3938/jkps.61.1683