Neutron depolarization study on the magnetic correlation length of nickel ferrite with different packing densities

Chih Hao Lee; Hsin Ho Chang; Hui Chia Su; Yu Han Wu; Chih Wei Hu; L. J. Chang; A. Ioffe; K. Bussmann; Th Brückel

doi:10.1016/j.physb.2009.06.023

Neutron depolarization study on the magnetic correlation length of nickel ferrite with different packing densities

Chih Hao Lee, Hsin Ho Chang, Hui Chia Su, Yu Han Wu, Chih Wei Hu, L. J. Chang, A. Ioffe, K. Bussmann, Th Brückel

Department of Physics

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

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Abstract

The magnetic correlation length of a mixed nickel ferrite powder was studied by a newly commissioned depolarized neutron beamline at the W3 port of Tsing Hua Open Pool Reactor (THOR). In this work, Ni ferrite powder samples with different packing densities were studied. The magnetic correlation lengths of the sample were observed to be 2 μm at virgin state and about 3.1 μm at remanent state from the packing density of 20-60%. This magnetic domain size is smaller than particle size. No significant change of domain size at this packing density implies the domain wall motion is hindered by the porosity effectively up to at least 60% of packing density.

Original language	English
Pages (from-to)	2565-2567
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	404
Issue number	17
DOIs	https://doi.org/10.1016/j.physb.2009.06.023
Publication status	Published - 2009 Sept 1

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/j.physb.2009.06.023

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@article{eeafd3f30d3342a98653209314013c3d,

title = "Neutron depolarization study on the magnetic correlation length of nickel ferrite with different packing densities",

abstract = "The magnetic correlation length of a mixed nickel ferrite powder was studied by a newly commissioned depolarized neutron beamline at the W3 port of Tsing Hua Open Pool Reactor (THOR). In this work, Ni ferrite powder samples with different packing densities were studied. The magnetic correlation lengths of the sample were observed to be 2 μm at virgin state and about 3.1 μm at remanent state from the packing density of 20-60%. This magnetic domain size is smaller than particle size. No significant change of domain size at this packing density implies the domain wall motion is hindered by the porosity effectively up to at least 60% of packing density.",

author = "Lee, {Chih Hao} and Chang, {Hsin Ho} and Su, {Hui Chia} and Wu, {Yu Han} and Hu, {Chih Wei} and Chang, {L. J.} and A. Ioffe and K. Bussmann and Th Br{\"u}ckel",

note = "Funding Information: The financial support of National Science Council of Taiwan under the contract Nos. of NSC93-2212-E-007-028 and NSC94-2739-M-007-001 are acknowledged.",

year = "2009",

month = sep,

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doi = "10.1016/j.physb.2009.06.023",

language = "English",

volume = "404",

pages = "2565--2567",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

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T1 - Neutron depolarization study on the magnetic correlation length of nickel ferrite with different packing densities

AU - Lee, Chih Hao

AU - Chang, Hsin Ho

AU - Su, Hui Chia

AU - Wu, Yu Han

AU - Hu, Chih Wei

AU - Chang, L. J.

AU - Ioffe, A.

AU - Bussmann, K.

AU - Brückel, Th

N1 - Funding Information: The financial support of National Science Council of Taiwan under the contract Nos. of NSC93-2212-E-007-028 and NSC94-2739-M-007-001 are acknowledged.

PY - 2009/9/1

Y1 - 2009/9/1

N2 - The magnetic correlation length of a mixed nickel ferrite powder was studied by a newly commissioned depolarized neutron beamline at the W3 port of Tsing Hua Open Pool Reactor (THOR). In this work, Ni ferrite powder samples with different packing densities were studied. The magnetic correlation lengths of the sample were observed to be 2 μm at virgin state and about 3.1 μm at remanent state from the packing density of 20-60%. This magnetic domain size is smaller than particle size. No significant change of domain size at this packing density implies the domain wall motion is hindered by the porosity effectively up to at least 60% of packing density.

AB - The magnetic correlation length of a mixed nickel ferrite powder was studied by a newly commissioned depolarized neutron beamline at the W3 port of Tsing Hua Open Pool Reactor (THOR). In this work, Ni ferrite powder samples with different packing densities were studied. The magnetic correlation lengths of the sample were observed to be 2 μm at virgin state and about 3.1 μm at remanent state from the packing density of 20-60%. This magnetic domain size is smaller than particle size. No significant change of domain size at this packing density implies the domain wall motion is hindered by the porosity effectively up to at least 60% of packing density.

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DO - 10.1016/j.physb.2009.06.023

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VL - 404

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EP - 2567

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 17

ER -

Neutron depolarization study on the magnetic correlation length of nickel ferrite with different packing densities

Abstract

All Science Journal Classification (ASJC) codes

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