Journal
PHYSICAL REVIEW B
Volume 79, Issue 9, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.79.094420
Keywords
ferromagnetic materials; lanthanum compounds; long-range order; magnetic structure; magnetic susceptibility; neutron diffraction; short-range order; spin glasses; strontium compounds
Funding
- U. S. Department of Energy [DE-FG02-01ER45927, DE-AC02-06CH11357]
- U. S. DOC [NIST-70NANB5H1152]
- NSF [DMR-9986442, DMR-0086210.]
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The nature of the competing ferromagnetic and incommensurate spin correlations in the spin-glass phase of La0.85Sr0.15CoO3 has been investigated by various neutron scattering techniques. Spin-polarized scattering indicates that the observed incommensurate peaks are dominantly magnetic in nature. Magnetic field experiments show that a field applied perpendicular to the short-range ordering wave vector destroys the incommensurate correlations and induces long-range ferromagnetic order. However, even for fields up to 7 T, short-range ferromagnetic correlations still coexist with the long-range ordered regions.
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