Macroscopic quantum tunneling of the total magnetization in small ferromagnetic grains

Anupam Garg; Gwang Hee Kim

doi:10.1063/1.345921

Macroscopic quantum tunneling of the total magnetization in small ferromagnetic grains

Anupam Garg^*, Gwang Hee Kim

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

The tunneling of the total magnetization of a single-domain spherical (∼100-Å-diam) particle is considered for various crystal symmetries, with special attention to the dissipative effect of phonons in the grain and any embedding matrix. Such dissipation is shown to have a spectral density J(ω)∼ω³ and to be very weak. Stray fields and interparticle interactions are also considered.

Original language	English (US)
Pages (from-to)	5669-5671
Number of pages	3
Journal	Journal of Applied Physics
Volume	67
Issue number	9
DOIs	https://doi.org/10.1063/1.345921
State	Published - 1990

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.345921

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@article{ea17522be60242e7a29f22ded25ccef3,

title = "Macroscopic quantum tunneling of the total magnetization in small ferromagnetic grains",

abstract = "The tunneling of the total magnetization of a single-domain spherical (∼100-{\AA}-diam) particle is considered for various crystal symmetries, with special attention to the dissipative effect of phonons in the grain and any embedding matrix. Such dissipation is shown to have a spectral density J(ω)∼ω3 and to be very weak. Stray fields and interparticle interactions are also considered.",

author = "Anupam Garg and Kim, {Gwang Hee}",

year = "1990",

doi = "10.1063/1.345921",

language = "English (US)",

volume = "67",

pages = "5669--5671",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics Publising LLC",

number = "9",

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T1 - Macroscopic quantum tunneling of the total magnetization in small ferromagnetic grains

AU - Garg, Anupam

AU - Kim, Gwang Hee

PY - 1990

Y1 - 1990

N2 - The tunneling of the total magnetization of a single-domain spherical (∼100-Å-diam) particle is considered for various crystal symmetries, with special attention to the dissipative effect of phonons in the grain and any embedding matrix. Such dissipation is shown to have a spectral density J(ω)∼ω3 and to be very weak. Stray fields and interparticle interactions are also considered.

AB - The tunneling of the total magnetization of a single-domain spherical (∼100-Å-diam) particle is considered for various crystal symmetries, with special attention to the dissipative effect of phonons in the grain and any embedding matrix. Such dissipation is shown to have a spectral density J(ω)∼ω3 and to be very weak. Stray fields and interparticle interactions are also considered.

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U2 - 10.1063/1.345921

DO - 10.1063/1.345921

M3 - Article

AN - SCOPUS:0042148778

VL - 67

SP - 5669

EP - 5671

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 9

ER -

Macroscopic quantum tunneling of the total magnetization in small ferromagnetic grains

Abstract

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