A new type of FCT martensite phase in single-crystalline Fe3Pt Invar alloy

Masataka Yamamoto; Sayaka Sekida; Takashi Fukuda; Tomoyuki Kakeshita; Kohki Takahashi; Keiichi Koyama; Hiroyuki Nojiri

doi:10.1016/j.jallcom.2011.06.035

A new type of FCT martensite phase in single-crystalline Fe₃Pt Invar alloy

Masataka Yamamoto, Sayaka Sekida, Takashi Fukuda, Tomoyuki Kakeshita, Kohki Takahashi, Keiichi Koyama, Hiroyuki Nojiri

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

9 Citations (Scopus)

Abstract

Martensitic transformation in a highly ordered Fe₃Pt has been investigated by magnetization and X-ray diffraction measurements. We confirmed that a new type of face-centered tetragonal (FCT) martensite phase appears below 60 K in Fe₃Pt with a degree of order S = 0.88. The tetragonality c/a gradually increases with decreasing temperature, and is approximately 1.005 at 10 K. This is in contrast to the tetragonality c/a < 1 generally observed in the FCT martensite with a degree of order less than 0.8. The spontaneous magnetization increases in association with the transformation.

Original language	English
Pages (from-to)	8530-8533
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	509
Issue number	34
DOIs	https://doi.org/10.1016/j.jallcom.2011.06.035
Publication status	Published - 2011 Aug 25

Keywords

Invar alloys
Magnetic measurements
Phase transitions
TEM
Transmission electron microscopy
X-ray diffraction

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/j.jallcom.2011.06.035

Fingerprint Dive into the research topics of 'A new type of FCT martensite phase in single-crystalline Fe<sub>3</sub>Pt Invar alloy'. Together they form a unique fingerprint.

Cite this

@article{4361663efbf74646b039522ee45bd7ed,

title = "A new type of FCT martensite phase in single-crystalline Fe3Pt Invar alloy",

abstract = "Martensitic transformation in a highly ordered Fe3Pt has been investigated by magnetization and X-ray diffraction measurements. We confirmed that a new type of face-centered tetragonal (FCT) martensite phase appears below 60 K in Fe3Pt with a degree of order S = 0.88. The tetragonality c/a gradually increases with decreasing temperature, and is approximately 1.005 at 10 K. This is in contrast to the tetragonality c/a < 1 generally observed in the FCT martensite with a degree of order less than 0.8. The spontaneous magnetization increases in association with the transformation.",

keywords = "Invar alloys, Magnetic measurements, Phase transitions, TEM, Transmission electron microscopy, X-ray diffraction",

author = "Masataka Yamamoto and Sayaka Sekida and Takashi Fukuda and Tomoyuki Kakeshita and Kohki Takahashi and Keiichi Koyama and Hiroyuki Nojiri",

year = "2011",

month = aug,

day = "25",

doi = "10.1016/j.jallcom.2011.06.035",

language = "English",

volume = "509",

pages = "8530--8533",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

number = "34",

}

TY - JOUR

T1 - A new type of FCT martensite phase in single-crystalline Fe3Pt Invar alloy

AU - Yamamoto, Masataka

AU - Sekida, Sayaka

AU - Fukuda, Takashi

AU - Kakeshita, Tomoyuki

AU - Takahashi, Kohki

AU - Koyama, Keiichi

AU - Nojiri, Hiroyuki

PY - 2011/8/25

Y1 - 2011/8/25

N2 - Martensitic transformation in a highly ordered Fe3Pt has been investigated by magnetization and X-ray diffraction measurements. We confirmed that a new type of face-centered tetragonal (FCT) martensite phase appears below 60 K in Fe3Pt with a degree of order S = 0.88. The tetragonality c/a gradually increases with decreasing temperature, and is approximately 1.005 at 10 K. This is in contrast to the tetragonality c/a < 1 generally observed in the FCT martensite with a degree of order less than 0.8. The spontaneous magnetization increases in association with the transformation.

AB - Martensitic transformation in a highly ordered Fe3Pt has been investigated by magnetization and X-ray diffraction measurements. We confirmed that a new type of face-centered tetragonal (FCT) martensite phase appears below 60 K in Fe3Pt with a degree of order S = 0.88. The tetragonality c/a gradually increases with decreasing temperature, and is approximately 1.005 at 10 K. This is in contrast to the tetragonality c/a < 1 generally observed in the FCT martensite with a degree of order less than 0.8. The spontaneous magnetization increases in association with the transformation.

KW - Invar alloys

KW - Magnetic measurements

KW - Phase transitions

KW - TEM

KW - Transmission electron microscopy

KW - X-ray diffraction

UR - http://www.scopus.com/inward/record.url?scp=79960437924&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79960437924&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2011.06.035

DO - 10.1016/j.jallcom.2011.06.035

M3 - Article

AN - SCOPUS:79960437924

VL - 509

SP - 8530

EP - 8533

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

IS - 34

ER -