Experiments on Two-Dimensional Heisenberg Systems
The crystal structure of the group of compounds with the general formula M2 + " align="middle"/>M2+(Hal)4, where the magnetic ion may be Mn2+, Ni2+, or Cu2+ for instance, strongly suggests the possibi...
The crystal structure of the group of compounds with the general formula M2 + " align="middle"/>M2+(Hal)4, where the magnetic ion may be Mn2+, Ni2+, or Cu2+ for instance, strongly suggests the possibi...
Strain-Sensitive Thin Magnetic Films
For the sonic film memory highly strain-sensitive ferromagnetic thin films are required with magnetic properties comparable to those of good Permalloy memory films. Research has shown that films prepa...
For the sonic film memory highly strain-sensitive ferromagnetic thin films are required with magnetic properties comparable to those of good Permalloy memory films. Research has shown that films prepa...
A Localized-Electron to Collective-Electron Transition in the System (La, Sr)CoO3
J. Appl. Phys. 39, 1209 (1968); doi:10.1063/1.1656227
Issue Date: 1 February 1968
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Crystallographic, magnetic, and electrical studies of the system La1−xSrxCoO3.00±0.01 for 0
x0.5 give indirect evidence for the presence of chemical inhomogeneities separating strontium-free regions, where localized ``3d'' electrons occur at thermally excited high-spin Co3+ ions, from strontium-rich regions, where the ``3d'' electrons are collective and give ferromagnetism at low temperatures. These different regions occur within the same rhombohedral perovskite crystal and appear to represent two different electronic phases within the same crystallographic phase. A schematic band model for the ferromagnetic phase is presented.
©1968 The American Institute of Physics
x0.5 give indirect evidence for the presence of chemical inhomogeneities separating strontium-free regions, where localized ``3d'' electrons occur at thermally excited high-spin Co3+ ions, from strontium-rich regions, where the ``3d'' electrons are collective and give ferromagnetism at low temperatures. These different regions occur within the same rhombohedral perovskite crystal and appear to represent two different electronic phases within the same crystallographic phase. A schematic band model for the ferromagnetic phase is presented.
©1968 The American Institute of Physics
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REFERENCES (5)
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- P. M. Raccah and J. B. Goodenough,
Phys. Rev. 155, 932 (1967) . - J. B. Goodenough,
J. Phys. Chem. Solids 6, 287 (1958) . - G. H. Jonker and J. H. Van Santen,
Physica 19, 120 (1953) . - J. B. Goodenough, J. Appl. Phys. 39, 403 (1968), this issue.
- J. B. Goodenough, J. Appl. Phys. 37, 1415 (1966).
