Structural, magnetic, and electronic transport properties of (Sr0.9 Ca0.1) 3 Ru2 O7 single crystal

Bin Qian, Zhe Qu, Jin Peng, Tijiang Liu, Xiaoshan Wu, L. Spinu, Z. Q. Mao

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

We have studied the structural, magnetic, and electronic transport properties of (Sr0.9 Ca0.1) 3 Ru2 O7 using single crystals grown by a floating-zone technique. The structure analysis by Rietveld refinements reveals that the Ca substitution for Sr intensifies the structure distortion; the rotation angle of the RuO6 octahedron increases. This structure change tunes magnetic and transport properties dramatically. The magnetic ground state switches from an itinerant metamagnetic state for Sr3 Ru2 O7 to a nearly ferromagnetic state for (Sr0.9 Ca0.1) 3 Ru2 O7. The Fermi liquid behavior occurs in Sr3 Ru2 O7, but is suppressed in (Sr0.9 Ca0.1) 3 Ru2 O7. These results strongly suggest that lattice, spin, and charge degrees of freedom are strongly coupled in this system. The band width narrowing caused by the structure distortion should be responsible for the enhancement of ferromagnetic correlations and the change of transport properties.

Original languageEnglish (US)
Article number07E323
JournalJournal of Applied Physics
Volume105
Issue number7
DOIs
StatePublished - 2009

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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