Details
| Original language | English |
|---|---|
| Pages (from-to) | 416-420 |
| Number of pages | 5 |
| Journal | Zeitschrift fur Anorganische und Allgemeine Chemie |
| Volume | 628 |
| Issue number | 2 |
| Publication status | Published - 13 Feb 2002 |
Abstract
Alkali metal tungsten bronzes, M xWO 3, and its niobium substituted forms, M xNb yW 1-yO 3, have been prepared with M = K and Rb and nominal compositions of x = 0.20, 0.25, 0.30 and 0.0 ≤ y ≤ 0.20 at temperatures between 600 and 900°C. The X-ray powder patterns reveal that single phases of niobium substituted hexagonal tungsten bronze (HTB) can be prepared for x = 0.2, y ≤ 0.05; x = 0.25, y ≤ 0.125 and x = 0.3, y ≤ 0.15. Investigations of the optical reflectivity and the infrared absorption of Rb 0.3Nb yW 1-yO 3 indicate a decreasing concentration of free carrier with increasing niobium content.
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In: Zeitschrift fur Anorganische und Allgemeine Chemie, Vol. 628, No. 2, 13.02.2002, p. 416-420.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Synthesis and characterization of niobium substituted hexagonal tungsten bronzes
AU - Hussain, A.
AU - Ul-Monir, A.
AU - Murshed, M. M.
AU - Rüscher, C. H.
PY - 2002/2/13
Y1 - 2002/2/13
N2 - Alkali metal tungsten bronzes, M xWO 3, and its niobium substituted forms, M xNb yW 1-yO 3, have been prepared with M = K and Rb and nominal compositions of x = 0.20, 0.25, 0.30 and 0.0 ≤ y ≤ 0.20 at temperatures between 600 and 900°C. The X-ray powder patterns reveal that single phases of niobium substituted hexagonal tungsten bronze (HTB) can be prepared for x = 0.2, y ≤ 0.05; x = 0.25, y ≤ 0.125 and x = 0.3, y ≤ 0.15. Investigations of the optical reflectivity and the infrared absorption of Rb 0.3Nb yW 1-yO 3 indicate a decreasing concentration of free carrier with increasing niobium content.
AB - Alkali metal tungsten bronzes, M xWO 3, and its niobium substituted forms, M xNb yW 1-yO 3, have been prepared with M = K and Rb and nominal compositions of x = 0.20, 0.25, 0.30 and 0.0 ≤ y ≤ 0.20 at temperatures between 600 and 900°C. The X-ray powder patterns reveal that single phases of niobium substituted hexagonal tungsten bronze (HTB) can be prepared for x = 0.2, y ≤ 0.05; x = 0.25, y ≤ 0.125 and x = 0.3, y ≤ 0.15. Investigations of the optical reflectivity and the infrared absorption of Rb 0.3Nb yW 1-yO 3 indicate a decreasing concentration of free carrier with increasing niobium content.
KW - Niobium
KW - Tungsten bronzes
UR - http://www.scopus.com/inward/record.url?scp=0036002193&partnerID=8YFLogxK
U2 - 10.1002/1521-3749(200202)628:2<416::AID-ZAAC416>3.0.CO;2-A
DO - 10.1002/1521-3749(200202)628:2<416::AID-ZAAC416>3.0.CO;2-A
M3 - Article
AN - SCOPUS:0036002193
VL - 628
SP - 416
EP - 420
JO - Zeitschrift fur Anorganische und Allgemeine Chemie
JF - Zeitschrift fur Anorganische und Allgemeine Chemie
SN - 0044-2313
IS - 2
ER -