Skip to main content

Temperature Dependence of Lattice Parameters and Anisotropic Thermal Expansion of Bismuth Oxide

Buy Article:

$51.00 plus tax (Refund Policy)


Temperature dependence of lattice parameters of bismuth sesquioxide (Bi2O3) has been obtained between 26° and 778°C by the Rietveld method using neutron powder diffraction data. Lattice parameters and unit-cell volume of α and  phases increased, while the  angle of α phase decreased with an increase of temperature. Here the denotes the lattice parameter a of the α phase on the basis of pseudo-fluorite lattice. The thermal expansion coefficients of α phase were 26.7, 6.6, and 9.0 (× 10−6°C−1) for and axes, respectively, indicating a large anisotropy. The α- to - phase transition of Bi2O3 was confirmed between 721° and 760°C on heating. At the α– transition point, the lattice parameters and unit-cell volume discontinuously changed, indicating that the transition is of the first order.

Document Type: Research Article


Affiliations: 1: Department of Materials Science and Engineering, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Yokohama 226-8502, Japan 2: Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan

Publication date: August 1, 2005

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more