Atomic-Resolution X-ray Energy-Dispersive Spectroscopy Chemical Mapping of Substitutional Dy Atoms in a High-Coercivity Neodymium Magnet

Masaru Itakura; Natsuki Watanabe; Minoru Nishida; Takeshi Daio; Syo Matsumura

doi:10.7567/JJAP.52.050201

Atomic-Resolution X-ray Energy-Dispersive Spectroscopy Chemical Mapping of Substitutional Dy Atoms in a High-Coercivity Neodymium Magnet

Masaru Itakura, Natsuki Watanabe, Minoru Nishida, Takeshi Daio, Syo Matsumura

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

20 Citations (Scopus)

Abstract

We have investigated local element distributions in a Dy-doped Nd2Fe14B hot-deformed magnet by atomic-column resolution chemical mapping using an X-ray energy-dispersive spectrometer (XEDS) attached to an aberration-corrected scanning transmission electron microscope (Cscorrected STEM). The positions of the Nd and Dy atomic columns were visualized in the XEDS maps. The substitution of Dy was limited to a surface layer 2-3 unit cells thick in the Nd2Fe14B grains, and the Dy atoms preferentially occupied the 4f-Nd sites of Nd2Fe14B. These results provide further insights into the principal mechanism governing the coercivity enhancement due to Dy doping.

Original language	English
Article number	050201
Journal	Japanese journal of applied physics
Volume	52
Issue number	5 PART 1
DOIs	https://doi.org/10.7567/JJAP.52.050201
Publication status	Published - May 2013

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.7567/JJAP.52.050201

Cite this

@article{676122e81e1e49acb4eb4eee73281398,

title = "Atomic-Resolution X-ray Energy-Dispersive Spectroscopy Chemical Mapping of Substitutional Dy Atoms in a High-Coercivity Neodymium Magnet",

abstract = "We have investigated local element distributions in a Dy-doped Nd2Fe14B hot-deformed magnet by atomic-column resolution chemical mapping using an X-ray energy-dispersive spectrometer (XEDS) attached to an aberration-corrected scanning transmission electron microscope (Cscorrected STEM). The positions of the Nd and Dy atomic columns were visualized in the XEDS maps. The substitution of Dy was limited to a surface layer 2-3 unit cells thick in the Nd2Fe14B grains, and the Dy atoms preferentially occupied the 4f-Nd sites of Nd2Fe14B. These results provide further insights into the principal mechanism governing the coercivity enhancement due to Dy doping.",

author = "Masaru Itakura and Natsuki Watanabe and Minoru Nishida and Takeshi Daio and Syo Matsumura",

year = "2013",

month = may,

doi = "10.7567/JJAP.52.050201",

language = "English",

volume = "52",

journal = "Japanese journal of applied physics",

issn = "0021-4922",

publisher = "The Japan Society of Applied Physics",

number = "5 PART 1",

}

TY - JOUR

T1 - Atomic-Resolution X-ray Energy-Dispersive Spectroscopy Chemical Mapping of Substitutional Dy Atoms in a High-Coercivity Neodymium Magnet

AU - Itakura, Masaru

AU - Watanabe, Natsuki

AU - Nishida, Minoru

AU - Daio, Takeshi

AU - Matsumura, Syo

PY - 2013/5

Y1 - 2013/5

N2 - We have investigated local element distributions in a Dy-doped Nd2Fe14B hot-deformed magnet by atomic-column resolution chemical mapping using an X-ray energy-dispersive spectrometer (XEDS) attached to an aberration-corrected scanning transmission electron microscope (Cscorrected STEM). The positions of the Nd and Dy atomic columns were visualized in the XEDS maps. The substitution of Dy was limited to a surface layer 2-3 unit cells thick in the Nd2Fe14B grains, and the Dy atoms preferentially occupied the 4f-Nd sites of Nd2Fe14B. These results provide further insights into the principal mechanism governing the coercivity enhancement due to Dy doping.

AB - We have investigated local element distributions in a Dy-doped Nd2Fe14B hot-deformed magnet by atomic-column resolution chemical mapping using an X-ray energy-dispersive spectrometer (XEDS) attached to an aberration-corrected scanning transmission electron microscope (Cscorrected STEM). The positions of the Nd and Dy atomic columns were visualized in the XEDS maps. The substitution of Dy was limited to a surface layer 2-3 unit cells thick in the Nd2Fe14B grains, and the Dy atoms preferentially occupied the 4f-Nd sites of Nd2Fe14B. These results provide further insights into the principal mechanism governing the coercivity enhancement due to Dy doping.

UR - http://www.scopus.com/inward/record.url?scp=84880908915&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84880908915&partnerID=8YFLogxK

U2 - 10.7567/JJAP.52.050201

DO - 10.7567/JJAP.52.050201

M3 - Article

AN - SCOPUS:84880908915

SN - 0021-4922

VL - 52

JO - Japanese journal of applied physics

JF - Japanese journal of applied physics

IS - 5 PART 1

M1 - 050201

ER -

Atomic-Resolution X-ray Energy-Dispersive Spectroscopy Chemical Mapping of Substitutional Dy Atoms in a High-Coercivity Neodymium Magnet

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this