Title :
Faraday rotations of quaternary diluted magnetic semiconductors Cd1-x-yMnxHgyTe crystals
Author :
Hwang, Y.W. ; Kim, H.K. ; Um, Y.H. ; Park, H.Y. ; Jeen, G.S.
Author_Institution :
Dept. of Phys., Ulsan Univ., South Korea
Abstract :
The Faraday rotation of the Hg doped Cd1-x-yMnxHgyTe (x∼0.37, 0.01≤y≤0.09), and discuss the effect of the Hg concentration on the magneto-optical properties of Cd1-xMnxTe. TheCd1-x-yMnxHgyTe single crystals were grown by double furnace of the vertical Bridgman method. Faraday rotation as a function of photon energy was measured using a monochromator, with a tungsten-halogen lamp as a light source. The Verdet constants as a function of photon energy and Hg concentration was determined separately. It was found that the Verdet constants are enhanced as the photon energy increases near to that of the fundamental band gap. The Verdet constant was found to decrease as the Hg concentration decreases.
Keywords :
Faraday effect; cadmium alloys; crystal growth from melt; energy gap; manganese alloys; mercury (metal); monochromators; semimagnetic semiconductors; tellurium alloys; Cd1-x-yMnxHgyTe; Faraday rotations; Verdet constants; band gap; light source; magneto-optical properties; monochromator; photon energy; quaternary diluted magnetic semiconductors; tungsten-halogen lamp; vertical Bridgman method; Energy measurement; Furnaces; Magnetic properties; Magnetic semiconductors; Magnetooptic effects; Mercury (metals); Photonic band gap; Photonic crystals; Rotation measurement; Tellurium;
Conference_Titel :
Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International
Print_ISBN :
0-7803-9009-1
DOI :
10.1109/INTMAG.2005.1464478
