Mediated exchange interaction in Fe-Nb-B nanocrystalline soft magnetic materials

Youhui Gao; Daisuke Shindo; Teruo Bitoh; Akihiro Makino

doi:10.1103/PhysRevB.67.172409

Mediated exchange interaction in Fe-Nb-B nanocrystalline soft magnetic materials

Youhui Gao, Daisuke Shindo, Teruo Bitoh, Akihiro Makino

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

14 Citations (Scopus)

Abstract

The magnetic interactions between bcc Fe nanocrystalline particles in (formula presented) nanocrystalline soft magnetic alloys are in situ studied by electron holography. Wavy lines of magnetic flux inside magnetic domains reveal local magnetization fluctuations of magnetic ripple structure, which result from the interplay between the exchange and magnetostatic interactions. The longitudinal wavelength decreases with an increase in temperature. It is found that the local stray field greatly weakens the intergranular exchange coupling and reduces the coupled volume at elevated temperatures. The thermal magnetic behaviors of nanocrystalline soft magnetic alloys are explained.

Original language	English
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	67
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevB.67.172409
Publication status	Published - 2003 May 29

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1103/PhysRevB.67.172409

Cite this

@article{86347cf243124a4c8688697676e597be,

title = "Mediated exchange interaction in Fe-Nb-B nanocrystalline soft magnetic materials",

abstract = "The magnetic interactions between bcc Fe nanocrystalline particles in (formula presented) nanocrystalline soft magnetic alloys are in situ studied by electron holography. Wavy lines of magnetic flux inside magnetic domains reveal local magnetization fluctuations of magnetic ripple structure, which result from the interplay between the exchange and magnetostatic interactions. The longitudinal wavelength decreases with an increase in temperature. It is found that the local stray field greatly weakens the intergranular exchange coupling and reduces the coupled volume at elevated temperatures. The thermal magnetic behaviors of nanocrystalline soft magnetic alloys are explained.",

author = "Youhui Gao and Daisuke Shindo and Teruo Bitoh and Akihiro Makino",

year = "2003",

month = may,

day = "29",

doi = "10.1103/PhysRevB.67.172409",

language = "English",

volume = "67",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "0163-1829",

publisher = "American Institute of Physics Publising LLC",

number = "17",

}

TY - JOUR

T1 - Mediated exchange interaction in Fe-Nb-B nanocrystalline soft magnetic materials

AU - Gao, Youhui

AU - Shindo, Daisuke

AU - Bitoh, Teruo

AU - Makino, Akihiro

PY - 2003/5/29

Y1 - 2003/5/29

N2 - The magnetic interactions between bcc Fe nanocrystalline particles in (formula presented) nanocrystalline soft magnetic alloys are in situ studied by electron holography. Wavy lines of magnetic flux inside magnetic domains reveal local magnetization fluctuations of magnetic ripple structure, which result from the interplay between the exchange and magnetostatic interactions. The longitudinal wavelength decreases with an increase in temperature. It is found that the local stray field greatly weakens the intergranular exchange coupling and reduces the coupled volume at elevated temperatures. The thermal magnetic behaviors of nanocrystalline soft magnetic alloys are explained.

AB - The magnetic interactions between bcc Fe nanocrystalline particles in (formula presented) nanocrystalline soft magnetic alloys are in situ studied by electron holography. Wavy lines of magnetic flux inside magnetic domains reveal local magnetization fluctuations of magnetic ripple structure, which result from the interplay between the exchange and magnetostatic interactions. The longitudinal wavelength decreases with an increase in temperature. It is found that the local stray field greatly weakens the intergranular exchange coupling and reduces the coupled volume at elevated temperatures. The thermal magnetic behaviors of nanocrystalline soft magnetic alloys are explained.

UR - http://www.scopus.com/inward/record.url?scp=0037899584&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037899584&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.67.172409

DO - 10.1103/PhysRevB.67.172409

M3 - Article

AN - SCOPUS:0037899584

SN - 0163-1829

VL - 67

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 17

ER -

Mediated exchange interaction in Fe-Nb-B nanocrystalline soft magnetic materials

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this