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Corrections to “Thermal expansion of anatase and rutile between 300 and 575 K using synchrotron powder X-ray diffraction” [Powder Diffr. 22, 352–357 (2007)]

Published online by Cambridge University Press:  29 February 2012

D. R. Hummer ,
P. J. Heaney  and
J. E. Post
D. R. Hummer
Affiliation:
Department of Geosciences, The Pennsylvania State University, University Park, Pennsylvania 16082
P. J. Heaney
Affiliation:
Department of Geosciences, The Pennsylvania State University, University Park, Pennsylvania 16082
J. E. Post
Affiliation:
Department of Mineral Sciences, Smithsonian Institution, Washington, DC 20560-0119

Abstract

Corrections are made to two equations and one table value in “Thermal expansion of anatase and rutile between 300 and 575 K using synchrotron powder X-ray diffraction” [Powder Diffr. 22, 352–357 (2007)].

Information

Type
LETTERS TO THE EDITOR
Information
Powder Diffraction , Volume 23 , Issue 3 , September 2008 , pp. 267
Copyright
Copyright © Cambridge University Press 2008

We alert readers' attention to errors found in our published article “Thermal expansion of anatase and rutile between 300 and 575 K using synchrotron powder X-ray diffraction” [Powder Diffr. 22, 352–357 (2007)]. The errors were pointed out to us by Dr. Matteo Ardit of the University of Ferrara, Ferrara, Italy, to whom we are most grateful. They involve two of the equations that were derived for the thermal expansion coefficients of the rutile phase and one of the values in Table IV that was calculated from these equations. The article can be made accurate by the following three corrections:

  1. (1) Page 356: The first coefficient in Eq. 4(e) should be negative. (should read −1.234 56×10−10×T 2 instead of 1.234 56×10−10×T 2).

  2. (2) Page 356: The first coefficient in Eq. 4(f) should be negative. (should read −8.3370×10−9×T 2 instead of 8.3370×10−9×T 2).

  3. (3) Page 355: The value of β/10−6 K−1 for the rutile phase in Table IV should be 33.948 (instead of 28.680).

The value of αc/10−6 K−1 for rutile in Table IV is correct as printed, even though this value is calculated using Eq. 4(e). We regret that our original publication was not completely accurate and apologize for any inconvenience that these errors may have caused.