Quasi‐lifetime topography of magnetic domain movements in grain oriented (100) [001] Fe−3 wt% Si Polycrystals Using White Synchrotron Radiation: The influence of an external magnetic field

J. Stephenson, Väinö Kelhä, M. Tilli, T. Tuomi

Research output: Contribution to journalArticleScientificpeer-review

10 Citations (Scopus)

Abstract

The magnetization state within (100) [001] Fe−3wt% Si polycrystals of intermediate thickness (μoto ≈ 1.0) is controlled by the axial field of a magnetizing coil directed along either an easy [010]‐ or hard [011]‐magnetization axis. Typical topograph exposure times are between 24 and 120 s for chosen magnetization states throughout (dc induction) hysteresis cycles. When the magnetic field is applied along the easy [010]‐magnetization axis, [001]‐stripe domains, initially present at zero field, show extended growth into areas previously occupied by [010]‐stripe domains. In this experiment most of the stripe domains are completely replaced by 90° (chevron) closure domains after rapid reverse switching from positive to negative saturation states. In an alternative experiment the magnetic field is applied along a hard [011]‐magnetization axis of a similar crystal. Fields of 100 A/m immediately produce [010]‐stripe domains whose straight fronts advance along an easy [010]‐magnetization axis with further field increases. High saturation state reverse switching produces maximum or minimum stripe domain coverage which is dependent on the final field direction. Hysteresis (pinning) effects are detected at single defect positions, where pronounced Bloch wall bowing occurs during the crystal magnetization.

Original languageEnglish
Pages (from-to)93 - 105
Number of pages13
JournalPhysica Status Solidi A: Applied Research
Volume51
Issue number1
DOIs
Publication statusPublished - 1979
MoE publication typeNot Eligible

Fingerprint

Magnetic domains
Polycrystals
polycrystals
magnetic domains
Synchrotron radiation
Topography
Magnetization
topography
synchrotron radiation
Magnetic fields
magnetization
magnetic fields
Hysteresis
hysteresis
saturation
Bending (forming)
Crystals
closures
crystals
far fields

Cite this

@article{d057eb7e7cf74f4ead8345b67016e045,
title = "Quasi‐lifetime topography of magnetic domain movements in grain oriented (100) [001] Fe−3 wt{\%} Si Polycrystals Using White Synchrotron Radiation: The influence of an external magnetic field",
abstract = "The magnetization state within (100) [001] Fe−3wt{\%} Si polycrystals of intermediate thickness (μoto ≈ 1.0) is controlled by the axial field of a magnetizing coil directed along either an easy [010]‐ or hard [011]‐magnetization axis. Typical topograph exposure times are between 24 and 120 s for chosen magnetization states throughout (dc induction) hysteresis cycles. When the magnetic field is applied along the easy [010]‐magnetization axis, [001]‐stripe domains, initially present at zero field, show extended growth into areas previously occupied by [010]‐stripe domains. In this experiment most of the stripe domains are completely replaced by 90° (chevron) closure domains after rapid reverse switching from positive to negative saturation states. In an alternative experiment the magnetic field is applied along a hard [011]‐magnetization axis of a similar crystal. Fields of 100 A/m immediately produce [010]‐stripe domains whose straight fronts advance along an easy [010]‐magnetization axis with further field increases. High saturation state reverse switching produces maximum or minimum stripe domain coverage which is dependent on the final field direction. Hysteresis (pinning) effects are detected at single defect positions, where pronounced Bloch wall bowing occurs during the crystal magnetization.",
author = "J. Stephenson and V{\"a}in{\"o} Kelh{\"a} and M. Tilli and T. Tuomi",
year = "1979",
doi = "10.1002/pssa.2210510110",
language = "English",
volume = "51",
pages = "93 -- 105",
journal = "Physica Status Solidi A: Applications and Materials Science",
issn = "1862-6300",
publisher = "Wiley",
number = "1",

}

Quasi‐lifetime topography of magnetic domain movements in grain oriented (100) [001] Fe−3 wt% Si Polycrystals Using White Synchrotron Radiation : The influence of an external magnetic field . / Stephenson, J.; Kelhä, Väinö; Tilli, M.; Tuomi, T.

In: Physica Status Solidi A: Applied Research, Vol. 51, No. 1, 1979, p. 93 - 105.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Quasi‐lifetime topography of magnetic domain movements in grain oriented (100) [001] Fe−3 wt% Si Polycrystals Using White Synchrotron Radiation

T2 - The influence of an external magnetic field

AU - Stephenson, J.

AU - Kelhä, Väinö

AU - Tilli, M.

AU - Tuomi, T.

PY - 1979

Y1 - 1979

N2 - The magnetization state within (100) [001] Fe−3wt% Si polycrystals of intermediate thickness (μoto ≈ 1.0) is controlled by the axial field of a magnetizing coil directed along either an easy [010]‐ or hard [011]‐magnetization axis. Typical topograph exposure times are between 24 and 120 s for chosen magnetization states throughout (dc induction) hysteresis cycles. When the magnetic field is applied along the easy [010]‐magnetization axis, [001]‐stripe domains, initially present at zero field, show extended growth into areas previously occupied by [010]‐stripe domains. In this experiment most of the stripe domains are completely replaced by 90° (chevron) closure domains after rapid reverse switching from positive to negative saturation states. In an alternative experiment the magnetic field is applied along a hard [011]‐magnetization axis of a similar crystal. Fields of 100 A/m immediately produce [010]‐stripe domains whose straight fronts advance along an easy [010]‐magnetization axis with further field increases. High saturation state reverse switching produces maximum or minimum stripe domain coverage which is dependent on the final field direction. Hysteresis (pinning) effects are detected at single defect positions, where pronounced Bloch wall bowing occurs during the crystal magnetization.

AB - The magnetization state within (100) [001] Fe−3wt% Si polycrystals of intermediate thickness (μoto ≈ 1.0) is controlled by the axial field of a magnetizing coil directed along either an easy [010]‐ or hard [011]‐magnetization axis. Typical topograph exposure times are between 24 and 120 s for chosen magnetization states throughout (dc induction) hysteresis cycles. When the magnetic field is applied along the easy [010]‐magnetization axis, [001]‐stripe domains, initially present at zero field, show extended growth into areas previously occupied by [010]‐stripe domains. In this experiment most of the stripe domains are completely replaced by 90° (chevron) closure domains after rapid reverse switching from positive to negative saturation states. In an alternative experiment the magnetic field is applied along a hard [011]‐magnetization axis of a similar crystal. Fields of 100 A/m immediately produce [010]‐stripe domains whose straight fronts advance along an easy [010]‐magnetization axis with further field increases. High saturation state reverse switching produces maximum or minimum stripe domain coverage which is dependent on the final field direction. Hysteresis (pinning) effects are detected at single defect positions, where pronounced Bloch wall bowing occurs during the crystal magnetization.

U2 - 10.1002/pssa.2210510110

DO - 10.1002/pssa.2210510110

M3 - Article

VL - 51

SP - 93

EP - 105

JO - Physica Status Solidi A: Applications and Materials Science

JF - Physica Status Solidi A: Applications and Materials Science

SN - 1862-6300

IS - 1

ER -