"A-site substitution of SrRuO<sub>3</sub> using La, K and Pb" by Svetlana Shuba, Alexander Mamchik et al.

Departmental Papers (MSE)

Title

A-site substitution of SrRuO₃ using La, K and Pb

Author(s)

Svetlana Shuba, University of Pennsylvania
Alexander Mamchik, University of Pennsylvania
I-Wei Chen, University of Pennsylvania

Document Type

Journal Article

Date of this Version

October 2006

Comments

Postprint version. Published in Journal of Physics: Condensed Matter, Volume 80, Issue 40, October 2006, pages 9215-9220. Publisher URL: http://dx.doi.org/10.1088/0953-8984/18/40/007

Abstract

We have investigated Sr_1−xLa_x/2K_x/2RuO₃and Sr_1−xPb_xRuO₃, which have a larger average size of the A-site cations. They manifest a gradual loss of ferromagnetism in a similar way as their counterparts with smaller A-site cations. There is also evidence for a magnetism-suppressing disorder effect similar to that observed in Sr_1−xLa_x/2Na_x/2RuO₃. Therefore, the Stoner ferromagnetism in SrRuO₃ is rather unique and cannot be easily tuned by lattice distortion to yield a higher Curie temperature.