Observation of itinerant ferromagnetism in layered Sr{sub 3}Ru{sub 2}O{sub 7} single crystals
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32306 (United States)
Sr{sub 3}Ru{sub 2}O{sub 7} is a layered compound and a member of the Ruddlesden-Popper-type compound series of Sr{sub n+1}Ru{sub n}O{sub 3n+1} (n=1, 2, and n={infinity}) with n=2. Single crystals of Sr{sub 3}Ru{sub 2}O{sub 7} were grown and characterized, providing an unambiguous indication of a rich ferromagnetic state with T{sub c}=104 K and a saturated moment of 1.30{plus_minus}0.05{mu}{sub B}/Ru at T=5 K. Among many interesting features, a magnetic spin reorientation transition is observed, suggesting that moments in the ordered state order ferromagnetically with a slight canting on adjacent spins. Negative magnetoresistance, commonly occurring in ferromagnets, is relatively large (19{percent} at 10 T and T=30 K), suggesting a significant suppression of spin-flip scattering by the applied magnetic field. The results are discussed with comparisons drawn with sister compounds Sr{sub 2}RuO{sub 4}, SrRuO{sub 3} and other related systems.
- OSTI ID:
- 470858
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 2 Vol. 55; ISSN 0163-1829; ISSN PRBMDO
- Country of Publication:
- United States
- Language:
- English
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