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Thermal expansion of RNi2B2C single crystals

Title data

Jaenicke-Roessler, U. ; Paufler, P. ; Zahn, G. ; Geupel, Sandra ; Behr, G. ; Bitterlich, H.:
Thermal expansion of RNi2B2C single crystals.
In: Journal of Alloys and Compounds. Vol. 333 (2002) Issue 1–2 . - 28 - 33.
ISSN 0925-8388
DOI: https://doi.org/10.1016/S0925-8388(01)01703-0

Official URL: Volltext

Abstract in another language

Structure data and variation of lattice parameters of single crystals of {RNi2B2C} (R=Y, Tb, Dy, Ho, Er, Lu) have been investigated as a function of temperature. Eight quaternary and pseudo-quaternary compounds, respectively, were investigated between 90 and 360 K. Lattice parameters a and unit cell volumes {VUC} increased for all compounds with increasing temperature, while the axial ratios c/a of the unit cell parameters decreased. The most notable observation is a minimum in the temperature dependence of the lattice parameter c, which shifts towards lower temperatures with increasing atomic number {ZR} of the rare earth element. Coefficients of linear thermal expansion for YNi2B2C, for example, vary between αa=4.71×10−6 K−1 (100 K)–13.0×10−6 K−1 (300 K) and αc=−9.93×10−6 K−1 (100 K)–8.24×10−6 K−1 (300 K). Bulk expansion β varies between β=0.73×10−5 K−1 (100 K) and 2.78×10−5 K−1 (300 K).

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: X-ray diffraction
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 21 Mar 2016 11:32
Last Modified: 21 Mar 2016 11:32
URI: https://eref.uni-bayreuth.de/id/eprint/31934