Phase stability and magnetic properties of Co2(Ti1-xFex)Ga Heusler alloys

Akinari Okubo; Rie Y. Umetsu; Makoto Nagasako; Asaya Fujita; Ryosuke Kainuma; Kiyohito Ishida

doi:10.1016/j.scriptamat.2008.06.037

Phase stability and magnetic properties of Co₂(Ti_1-xFe_x)Ga Heusler alloys

Akinari Okubo, Rie Y. Umetsu, Makoto Nagasako, Asaya Fujita, Ryosuke Kainuma, Kiyohito Ishida

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

9 Citations (Scopus)

Abstract

The order-disorder phase transition temperature from L2₁ to B2 phase T_t^{L 21 / B 2}, the saturation magnetization M_s and the Curie temperature T_C were investigated in Co₂(Ti_1-xFe_x)Ga. It was confirmed that T_t^{L 21 / B 2} for 0.8 ≤ x ≤ 1.0 almost linearly decreases with increasing x, and M_s follows the generalized Slater-Pauling line in the middle region of x. T_C also increases with increasing x, exhibiting an upward convexity. It is concluded that a relatively high T_t^{L 21 / B 2}, a high T_C and a low M_s can be obtained in the present alloys.

Original language	English
Pages (from-to)	830-833
Number of pages	4
Journal	Scripta Materialia
Volume	59
Issue number	8
DOIs	https://doi.org/10.1016/j.scriptamat.2008.06.037
Publication status	Published - 2008 Oct

Keywords

Differential scanning calorimetry (DSC)
Half-metal ferromagnets
Heusler phases
Magnetic properties
Order-disorder phenomena

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

Access to Document

10.1016/j.scriptamat.2008.06.037

Cite this

@article{1d5c9966a2ec45e0a8a7b39479f1f7dd,

title = "Phase stability and magnetic properties of Co2(Ti1-xFex)Ga Heusler alloys",

abstract = "The order-disorder phase transition temperature from L21 to B2 phase TtL 21 / B 2, the saturation magnetization Ms and the Curie temperature TC were investigated in Co2(Ti1-xFex)Ga. It was confirmed that TtL 21 / B 2 for 0.8 ≤ x ≤ 1.0 almost linearly decreases with increasing x, and Ms follows the generalized Slater-Pauling line in the middle region of x. TC also increases with increasing x, exhibiting an upward convexity. It is concluded that a relatively high TtL 21 / B 2, a high TC and a low Ms can be obtained in the present alloys.",

keywords = "Differential scanning calorimetry (DSC), Half-metal ferromagnets, Heusler phases, Magnetic properties, Order-disorder phenomena",

author = "Akinari Okubo and Umetsu, {Rie Y.} and Makoto Nagasako and Asaya Fujita and Ryosuke Kainuma and Kiyohito Ishida",

note = "Funding Information: This work was supported by a grant-in-aid for Core Research for Evolutional Science and Technology (CREST) from the Japan Science and Technology Agency (JST), a grant for Scientific Research (S) from the Japan Society for the Promotion of Science (JSPS) and by a Global COE project grant.",

year = "2008",

month = oct,

doi = "10.1016/j.scriptamat.2008.06.037",

language = "English",

volume = "59",

pages = "830--833",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Elsevier Limited",

number = "8",

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TY - JOUR

T1 - Phase stability and magnetic properties of Co2(Ti1-xFex)Ga Heusler alloys

AU - Okubo, Akinari

AU - Umetsu, Rie Y.

AU - Nagasako, Makoto

AU - Fujita, Asaya

AU - Kainuma, Ryosuke

AU - Ishida, Kiyohito

N1 - Funding Information: This work was supported by a grant-in-aid for Core Research for Evolutional Science and Technology (CREST) from the Japan Science and Technology Agency (JST), a grant for Scientific Research (S) from the Japan Society for the Promotion of Science (JSPS) and by a Global COE project grant.

PY - 2008/10

Y1 - 2008/10

N2 - The order-disorder phase transition temperature from L21 to B2 phase TtL 21 / B 2, the saturation magnetization Ms and the Curie temperature TC were investigated in Co2(Ti1-xFex)Ga. It was confirmed that TtL 21 / B 2 for 0.8 ≤ x ≤ 1.0 almost linearly decreases with increasing x, and Ms follows the generalized Slater-Pauling line in the middle region of x. TC also increases with increasing x, exhibiting an upward convexity. It is concluded that a relatively high TtL 21 / B 2, a high TC and a low Ms can be obtained in the present alloys.

AB - The order-disorder phase transition temperature from L21 to B2 phase TtL 21 / B 2, the saturation magnetization Ms and the Curie temperature TC were investigated in Co2(Ti1-xFex)Ga. It was confirmed that TtL 21 / B 2 for 0.8 ≤ x ≤ 1.0 almost linearly decreases with increasing x, and Ms follows the generalized Slater-Pauling line in the middle region of x. TC also increases with increasing x, exhibiting an upward convexity. It is concluded that a relatively high TtL 21 / B 2, a high TC and a low Ms can be obtained in the present alloys.

KW - Differential scanning calorimetry (DSC)

KW - Half-metal ferromagnets

KW - Heusler phases

KW - Magnetic properties

KW - Order-disorder phenomena

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U2 - 10.1016/j.scriptamat.2008.06.037

DO - 10.1016/j.scriptamat.2008.06.037

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AN - SCOPUS:48749100661

SN - 1359-6462

VL - 59

SP - 830

EP - 833

JO - Scripta Materialia

JF - Scripta Materialia

IS - 8

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