Thermodynamics and crystal growth of Cd1-x-yMnxZnyTe (x=0.10, 0.20, y=0.15)

V. Kopach; O. Kopach; L. Shcherbak; P. Fochuk; A. E. Bolotnikov; R. B. James

doi:10.1117/12.2594545

1 September 2021 Thermodynamics and crystal growth of Cd_1-x-yMn_xZn_yTe (x=0.10, 0.20, y=0.15)

V. Kopach, O. Kopach, L. Shcherbak, P. Fochuk, A. E. Bolotnikov, R. B. James

Proceedings Volume 11838, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIII; 1183819 (2021) https://doi.org/10.1117/12.2594545
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Conference Poster

Abstract

In this work the structural, optical and electrical properties of Cd_1-x-yMn_xZn_yTe single crystals (x=0.10, 0.20, y=0.15) grown by the vertical Bridgman method were investigated. Based on differential thermal analysis results, it was found that the crystallization rate increases as the crystallization temperature (Ts) decreases. It is determined that the volume fraction of solid phase in Cd_0.75Mn_0.10Zn_0.15Te and Cd0.65Mn0.20Zn0.15Te alloys decrease to a minimum in the temperature ranges 1366–1389 K and 1363-1388 K, respectively. The activation energies of melting and crystallization processes for these alloys under different conditions are established. The linear character of the dependence between the preexponential factor (lnφ_sol.phase,0 and lnV_{melt., sol. phase,0}) and the activation energy of these processes is determined, which is evidence of a compensation effect. The band-gap value was estimated to be ~ 1.73 eV for Cd_0.75Mn_0.10Zn_0.15Te and ~1.84 eV for Cd_0.65Mn_0.20Zn_0.15Te at 300 K. Typical transmission images showed the presence of small Te inclusions (5- 10 μm) in the crystals. The electrical resistivity, obtained from the I-V curves, was ~10⁴ Ω·cm for both crystals and decreased slightly toward the end of the ingots.

Citation Download Citation

V. Kopach, O. Kopach, L. Shcherbak, P. Fochuk, A. E. Bolotnikov, and R. B. James "Thermodynamics and crystal growth of Cd_1-x-yMn_xZn_yTe (x=0.10, 0.20, y=0.15)", Proc. SPIE 11838, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIII, 1183819 (1 September 2021); https://doi.org/10.1117/12.2594545

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available