SOLUBILITY LIMIT OF MN IN THE SEMIMAGNETIC SEMICONDUCTOR PB1-X-YSNXMNYTE

Pb1-x-ySnxMnyTe crystals were grown by the Bridgman method. Investigat ion of the chemical composition along the diameter of the ingots show them to be very homogeneous. Segregation of the elements was observed along the growth axis of the ingots. Analysis of the chemical composit ion of the samples showed that tin is conducive to the incorporation o f manganese atoms, while the presence of lead limits the quantity of m anganese incorporated. The solubility limit of manganese has been dete rmined as 0.18 when the tin content is 0.815 and the lead content is 0 .005. Results showed that any inappropriate ratio of tin to manganese leads to growth of inhomogeneous crystals. The limiting relation of Sn to Mn content, necessary to obtain homogeneous samples has been deter mined for Pb1-x-ySnxMnyTe crystals with Sn greater than or equal to 0. 5.