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Interplay of structure and magnetism in ruthenocuprates: a Raman scattering and dilatometry study by A. Fainstein; C.A. Ramos; R.G. Pregliasco; A. Butera; H.J. Trodahl; G.V.M. Williams; J.L. Tallon is a Physics and Astronomy article available to read on EtoBox.
What is Interplay of structure and magnetism in ruthenocuprates: a Raman scattering and dilatometry study about?
We present a Raman scattering and dilatometry study of polycrystalline samples of the magnetic superconducting ruthenocuprates RuSr 2 Gd 2Àx Ce x Cu 2 O 10þd (RuGd 1222 ) and RuSr 2 GdCu 2 O 8 (RuGd 1212 ). In the Raman spectra a hightemperature diffusive-like laser-tail develops below the magnetic ordering temperature (T M ) into an underdamped peak which shifts up to B130 cm À1 : A line assigned to O(Ru) phonons hardens, narrows and strengthens strongly below T M : Finally, a phonon peak appears below T M at B590 cm À1 : These three magnetic-order-dependent features are observed for RuGd 1212 and for RuGd 1222 with x 1⁄4 1:0; but do not appear for x 1⁄4 0:5: Dilatometry measurements, on the other hand, evidence a change of the expansion coefficient at T M : These results point to a structural effect accompanying the magnetic order, and suggest a complex interplay of spin and lattice degrees of freedom in these ruthenocuprates.
Who reads Interplay of structure and magnetism in ruthenocuprates: a Raman scattering and dilatometry study?
It is typically read by researchers, students, and practitioners in Physics and Astronomy.
- Author
- A. Fainstein; C.A. Ramos; R.G. Pregliasco; A. Butera; H.J. Trodahl; G.V.M. Williams; J.L. Tallon
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0921-4526)
- Published
- 2002
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)