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- W261974230 abstract "Abstract : The objective of these investigations was to study the magnetic properties of a collection of small magnetic particles or magnetized domains with special attention to detecting and documenting the occurence of macroscopic quantum tunneling of magnetization. Magnetized small particles are the basic elements used for magnetic storage, and our studies are important from a technological points of view: quantum-mechanical tunneling of the magnetization of small particles sets the ultimate limit on the reliability of magnetic storage and an upper limit on storage density. Experimentally, we succeeded in observing thermally assisted, field-tuned resonant tunneling between quantum spin states in a macroscopic-sized sample of the molecular magnetic material, manganese acetate. The magnetic properties of horse-spleen ferritin were also investigated. Theoretical studies included investigations of tunneling in random magnets, the introduction of the concept of a 'critical state', theoretical studies of antiferromagnetic grains with uncompensated sublattices, and the crossover from antiferromagnetic to ferromagnetic tunneling." @default.
- W261974230 created "2016-06-24" @default.
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- W261974230 date "1995-09-30" @default.
- W261974230 modified "2023-09-27" @default.
- W261974230 title "Quantum Tunneling of Magnetization." @default.
- W261974230 hasPublicationYear "1995" @default.
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