Standard X-ray Diffraction Powder Patterns

Indium Arsenide, InAs (cubic)Powder data cardsCardnumber8^387Indexlines1. 241. 022. 10SourceLiu and Peretti [1] 1953.Additional published patterns. A. landelli [2]1941.NBS sample* The sample of indium arsenidewas obtained from Semitronics, Inc., WinchesterMass. Spectrographic analysis showed the following impurities: 0.01 to 0.1 percent each ofsilver, aluminum, bismuth, chromium, iron, gallium, and titanium; and 0.001 to 0.01 percent eachof barium, calcium, cobalt, magnesium, nickel,antimony, and tin.The sample was an opaque metallic powder.The d-values of the three strongest lines are:3.498, 2.142, and 1.8263 A.Structural data. landelli [2] in 1941 determined that indium arsenide has the zinc sulfidestructure, the sj)ace group Td-F43m (No. 216), and4(InAs) per unit cell. The unit cell measurementreported by landelli has been converted from kXto angstrom units for comparison with the NBSvalue.Lattice constantshkl111200220311222400331420422511440531600620533444711642731Internal Standard, Tungsten, a= 3. 1648 ACu, 1.5405 A at 25 °CdA3.4983. 0302. 1421. 82631. 74891. 51451. 38951. 35441. 23661. 16581. 07071. 02411. 00970. 9578. 9239. 8745. 8483. 8096. 78877a100861382913215971016336158A6. 0596.0606. 0596. 0576. 0586. 0586.0576. 0576. 0586. 0586. 0576. 0586. 0586. 0586. 0586. 0596. 0586. 0586. 058Average value of last five lines- ______ __6. 058194119531963landelli [2]. ___________________Liu and Peretti [1] __ _ __ _National Bureau of Standards at25 °CL — — -_--_- — — — — ----A6. 0486. 0586. 058The density of indium arsenide calculated fromNBS lattice constant is 5.668 g/cm3 at 25 °C.References[1] T. S. Liu and E. A. Peretti, The indium-arsenic system,Trans. Am. Soc. Metals 45, 677-85 (1953).[2] A. landelli, Sulla struttura dei composti, InP, InAs, eInSb, Gazz. chim. ital, 71, 58-62 (1941).35