Smith, Mac J.; Knight, R. J.; Spencer, C. W.
Properties of Bi 2 Te 3 ‐Sb 2 Te 3 Alloys
The phase diagram for the Bi 2 Te 3 ☒Sb 2 Te 3 pseudo‐binary system is of the solid‐solution type, where the distribution coefficient k is equal to unity at 33.3 and 66.7 mole % Sb 2 Te 3 . The c lat tice parameter remains essentially constant across the diagram at 30.49 Å for both slowly crystallized and quenched alloys. For quenched alloys the a lattice parameter decreases almost linearly, from a value of 4.487 Å, for pure Bi 2 Te 3 , to a value of 4.275 Å, for pure Sb 2 Te 3 ; however, a significant contraction from linear variation is found in slowly crystallized materials. E G diminishes in an essentially linear fashion from 0.16 eV, for pure Bi 2 Te 3 , to 0.12 eV at 24.2 mole % Sb 2 Te 3 in both slowly crystallized and quenched materials. E G remains approximately constant from 24.2 to 66.7 mole % Sb 2 Te 3 for slowly crystallized materials but continues to drop for quenched materials.
http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.pngJournal of Applied PhysicsAmerican Institute of Physicshttp://www.deepdyve.com/lp/american-institute-of-physics/properties-of-bi-2-te-3-sb-2-te-3-alloys-CUEAezeM2u