Lattice location of B atoms in Ni0.75Al0.15Ti0.10 intermetallic compounds as observed by the channeling method

Koki Tanaka, Eiichi Yagi, Naoya Masahashi, Yoji Mizuhara, Kohei Tatsumi, Tomoo Takahari

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The lattice location of B atoms doped in Ll2-type Ni0.75Al0.15Ti0.10 intermetallic compounds was investigated by the ion channeling method with a 720 keV proton beam. Backscattered protons, α-particles generated by the 11B(p, α)8Be nuclear reaction and proton-induced X-rays were measured under channeling conditions. The channeling angular profiles for the α-particle yields exhibited a dip for the 〈100〉 and 〈111〉 channels, while a central peak for the 〈110〉 channel was observed, indicating octahedral (O) site occupancy of B atoms. There are two types of O-sites in a Ni2Al-type compound: body-centered positions surrounded by six Ni atoms (site I), and edge-centered positions surrounded by four Ni atoms and two Al atoms (site II). For the 〈111〉 channel, the half-width of the channeling dip for the a yields agreed well to that for the Al Kα X-rays rather than that for the Ni Kα X-rays. Hence, it is concluded that most of the B atoms occupy O-sites of type-I (site-I).

Original languageEnglish
Pages (from-to)471-475
Number of pages5
JournalNuclear Inst. and Methods in Physics Research, B
Volume45
Issue number1-4
DOIs
Publication statusPublished - 1990 Jan 2
Externally publishedYes

Fingerprint

Intermetallics
intermetallics
Atoms
atoms
X rays
Protons
x rays
Proton beams
Nuclear reactions
protons
proton beams
nuclear reactions
Ions
profiles
ions

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Instrumentation
  • Surfaces and Interfaces

Cite this

Lattice location of B atoms in Ni0.75Al0.15Ti0.10 intermetallic compounds as observed by the channeling method. / Tanaka, Koki; Yagi, Eiichi; Masahashi, Naoya; Mizuhara, Yoji; Tatsumi, Kohei; Takahari, Tomoo.

In: Nuclear Inst. and Methods in Physics Research, B, Vol. 45, No. 1-4, 02.01.1990, p. 471-475.

Research output: Contribution to journalArticle

Tanaka, Koki ; Yagi, Eiichi ; Masahashi, Naoya ; Mizuhara, Yoji ; Tatsumi, Kohei ; Takahari, Tomoo. / Lattice location of B atoms in Ni0.75Al0.15Ti0.10 intermetallic compounds as observed by the channeling method. In: Nuclear Inst. and Methods in Physics Research, B. 1990 ; Vol. 45, No. 1-4. pp. 471-475.
@article{a9ea5ae4a5574f8986962986f13a3ebd,
title = "Lattice location of B atoms in Ni0.75Al0.15Ti0.10 intermetallic compounds as observed by the channeling method",
abstract = "The lattice location of B atoms doped in Ll2-type Ni0.75Al0.15Ti0.10 intermetallic compounds was investigated by the ion channeling method with a 720 keV proton beam. Backscattered protons, α-particles generated by the 11B(p, α)8Be nuclear reaction and proton-induced X-rays were measured under channeling conditions. The channeling angular profiles for the α-particle yields exhibited a dip for the 〈100〉 and 〈111〉 channels, while a central peak for the 〈110〉 channel was observed, indicating octahedral (O) site occupancy of B atoms. There are two types of O-sites in a Ni2Al-type compound: body-centered positions surrounded by six Ni atoms (site I), and edge-centered positions surrounded by four Ni atoms and two Al atoms (site II). For the 〈111〉 channel, the half-width of the channeling dip for the a yields agreed well to that for the Al Kα X-rays rather than that for the Ni Kα X-rays. Hence, it is concluded that most of the B atoms occupy O-sites of type-I (site-I).",
author = "Koki Tanaka and Eiichi Yagi and Naoya Masahashi and Yoji Mizuhara and Kohei Tatsumi and Tomoo Takahari",
year = "1990",
month = "1",
day = "2",
doi = "10.1016/0168-583X(90)90878-X",
language = "English",
volume = "45",
pages = "471--475",
journal = "Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms",
issn = "0168-583X",
publisher = "Elsevier",
number = "1-4",

}

TY - JOUR

T1 - Lattice location of B atoms in Ni0.75Al0.15Ti0.10 intermetallic compounds as observed by the channeling method

AU - Tanaka, Koki

AU - Yagi, Eiichi

AU - Masahashi, Naoya

AU - Mizuhara, Yoji

AU - Tatsumi, Kohei

AU - Takahari, Tomoo

PY - 1990/1/2

Y1 - 1990/1/2

N2 - The lattice location of B atoms doped in Ll2-type Ni0.75Al0.15Ti0.10 intermetallic compounds was investigated by the ion channeling method with a 720 keV proton beam. Backscattered protons, α-particles generated by the 11B(p, α)8Be nuclear reaction and proton-induced X-rays were measured under channeling conditions. The channeling angular profiles for the α-particle yields exhibited a dip for the 〈100〉 and 〈111〉 channels, while a central peak for the 〈110〉 channel was observed, indicating octahedral (O) site occupancy of B atoms. There are two types of O-sites in a Ni2Al-type compound: body-centered positions surrounded by six Ni atoms (site I), and edge-centered positions surrounded by four Ni atoms and two Al atoms (site II). For the 〈111〉 channel, the half-width of the channeling dip for the a yields agreed well to that for the Al Kα X-rays rather than that for the Ni Kα X-rays. Hence, it is concluded that most of the B atoms occupy O-sites of type-I (site-I).

AB - The lattice location of B atoms doped in Ll2-type Ni0.75Al0.15Ti0.10 intermetallic compounds was investigated by the ion channeling method with a 720 keV proton beam. Backscattered protons, α-particles generated by the 11B(p, α)8Be nuclear reaction and proton-induced X-rays were measured under channeling conditions. The channeling angular profiles for the α-particle yields exhibited a dip for the 〈100〉 and 〈111〉 channels, while a central peak for the 〈110〉 channel was observed, indicating octahedral (O) site occupancy of B atoms. There are two types of O-sites in a Ni2Al-type compound: body-centered positions surrounded by six Ni atoms (site I), and edge-centered positions surrounded by four Ni atoms and two Al atoms (site II). For the 〈111〉 channel, the half-width of the channeling dip for the a yields agreed well to that for the Al Kα X-rays rather than that for the Ni Kα X-rays. Hence, it is concluded that most of the B atoms occupy O-sites of type-I (site-I).

UR - http://www.scopus.com/inward/record.url?scp=0025208858&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0025208858&partnerID=8YFLogxK

U2 - 10.1016/0168-583X(90)90878-X

DO - 10.1016/0168-583X(90)90878-X

M3 - Article

VL - 45

SP - 471

EP - 475

JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

SN - 0168-583X

IS - 1-4

ER -