Search

Magnetization of ErFeO3 single crystal was measured by a super conducting quantum interference device magnetometer with greatly improved precision. A dramatic (70%) increase of magnetization was observed in the spin-reorientation interval (88–97 K). This and the temperature dependence of the spin-rotation angle are accurately described by the modified mean field theory, which uses the key fact of the magnetic anisotropy of erbium subsystem. Calculated temperature dependence of the rotation angle shows a remarkable correspondence with the experiment with no fitting parameters. Proposed model is general and can be used to analyze orientation transitions in many orthoferrites. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR]

Focuses on a study which measured the temperature and time dependence of the initial susceptibility of the optical magnetization curve on epitaxial films of nominally pure yttrium iron garnet during illumination with white light after cooling in the dark. Maximum temperature for the occurrence of the light-induced effects on the susceptibility; Process of the change to low-susceptibility state by light excitation; Interpretation of results.

Examines the effects of simultaneous substitution of calcium&sup2+; and scandium[3+] on the magnetic properties of yttrium iron garnet (YIG). Measurement of the temperature dependence of the magnetization; Predictions for the composition dependence of the Curie point for octahedrally substituted YIG.

Focuses on a study which measured the temperature dependence of the magnetization of epitaxial films of yttrium calcium iron garnet system. Materials and experimental procedure; Results of molecular field calculations; Comparison between the calculations and the experimental results.

Focuses on a study which examined the temperature dependence of the anomalous g value of bismuth thulium: yttrium iron garnet. Theory for the effective g value; Experimental procedures; Determination of sublattice magnetization; Conclusion.

Magnetic hysteresis of ErFeO[sub3] is investigated in the temperature interval between the compensation point T[subcomp] = 46K and erbium ordering transition at T[sub12] = 4.1 K. The shape of the hysteresis loops evolves from rectangular near the compensation point to a double-triangle loops (similar to perminvar loops) near the erbium ordering transition. The evolution of the loop shape explains the peculiar temperature hysteresis observed at constant applied field. [ABSTRACT FROM AUTHOR]

Presents an abstract of a study on the effects of oxygen vacancies on magnetic properties of calcium-substituted yttrium iron garnet.

Magnetization of ErFeO3 single crystal was measured by a super conducting quantum interference device magnetometer with greatly improved precision. A dramatic (70%) increase of magnetization was observed in the spin-reorientation interval (88–97 K). This and the temperature dependence of the spin-rotation angle are accurately described by the modified mean field theory, which uses the key fact of the magnetic anisotropy of erbium subsystem. Calculated temperature dependence of the rotation angle shows a remarkable correspondence with the experiment with no fitting parameters. Proposed model is general and can be used to analyze orientation transitions in many orthoferrites. © 2004 American Institute of Physics. [ABSTRACT FROM AUTHOR]