11.07.2015 Views

Standard X-ray Diffraction Powder Patterns

Standard X-ray Diffraction Powder Patterns

Standard X-ray Diffraction Powder Patterns

SHOW MORE
SHOW LESS
  • No tags were found...

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

<strong>Powder</strong> data cardsCardnumber8-2110-54Indexlines3. 222. 372. 192. 033.203.25Bismuth Telluride (tellurobismuthite), BtTe3 (trigonal)Thompson [1].SourceVasenin and Konovalov [2].Additional published patterns. Harcourt [3]1942.NBS sample. The sample of bismuth telluridewas obtained as a single crystal from SemitronicsInc., Winchester, Mass. Spectrographic analysisshowed the following impurities: 0.0001 to 0.001percent each of magnesium and silicon.«The sample was a g<strong>ray</strong> opaque powder.The d-values of the three strongest lines are:3.222, 2.376, and 2.192 LStructural data. Lange [4] in 1939 determinedthat bismuth telluride has the tetradymite structure with the space group DSd-R3m (No. 166) and3(Bi2Te3) per unit hexagonal celL19401940195119541963Lattice constantsFrondel [5]_ _-_-_-_-Peacock and Berry [6]__Donges [7]_ _ __Semiletov [8]__ .-.National Bureau of<strong>Standard</strong>s at 25 C__aA4. 394. 3844. 354.394. 3852cA^n 730. 4530. 330.4630. 48316hkl (hex.)0030061011040150181-0-100-1-111101130-0-151161-0-130-1-142051-0-160-0-180-2-102-0-111*1-150-2-130-0-210-1-201250-2-161-1-182-1-103000-1-232-1-131-1-212-0-201-0-252-1-160-1-26Internal <strong>Standard</strong>,Tungsten, a = 3. 1648 ACu, 1.5405 A at 25 CdA10. 165. 0783. 7673. 3983. 2222, 6892. 3762. 2382. 1922. 1422.0312. 1131. 9951. 8901. 812L 7021. 6931. 6111. 5651, 49011. 47561. 45131. 41401. 39701. 34491. 34041. 2986L 26601. 25141. 22421. 21031. 18861. 16101. 14641. 1201I373

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!