Magnetic and structural properties of MnCoGe with minimal fe and sn substitution

Masahira Onoue; Ryota Kobayashi; Yoshifuru Mitsui; Masahiko Hiroi; Kohki Takahashi; Akihiro Kondo; Koichi Kindo; Yoshiya Uwatoko; Keiichi Koyama

doi:10.2320/matertrans.M2018183

Magnetic and structural properties of MnCoGe with minimal fe and sn substitution

Masahira Onoue, Ryota Kobayashi, Yoshifuru Mitsui, Masahiko Hiroi, Kohki Takahashi, Akihiro Kondo, Koichi Kindo, Yoshiya Uwatoko, Keiichi Koyama

IMR - High Field Laboratory for Superconducting Materials

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

9 Citations (Scopus)

Abstract

The magnetic and structural properties of MnCo_0.92Fe_0.08Ge_1-xSn_x (x = 0.02, 0.05, and 0.1) were investigated. A first-order magnetic transition was observed, which was accompanied by the martensitic transformation from a hexagonal Ni2In-Type to an orthorhombic TiNiSi-Type structure in the vicinity of 320K for x = 0.02 and 170K for x = 0.05 with thermal hysteresis of approximately 20 K. The magnetization of MnCo_0.92Fe_0.08Ge_0.95Sn_0.05 was estimated to be 102Am₂ kg^-1 in 5 T at 10 K. High field magnetization curves up to 55 T for MnC_o0.92Fe_0.08Ge_0.95Sn_0.05indicated the field-induced martensitic transformation. Mössbauer spectroscopy experiments revealed that Fe atoms occupied 79%85% in the Co-site and 21%15% in the Mn-site.

Original language	English
Pages (from-to)	1645-1650
Number of pages	6
Journal	Materials Transactions
Volume	59
Issue number	10
DOIs	https://doi.org/10.2320/matertrans.M2018183
Publication status	Published - 2018

Keywords

Martensitic transformation
Metamagnetic transition
MnCoGe
Mössbauer spectroscopy
Powder X-ray diffraction
Pulsed magnetic fields

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10.2320/matertrans.M2018183

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title = "Magnetic and structural properties of MnCoGe with minimal fe and sn substitution",

abstract = "The magnetic and structural properties of MnCo0.92Fe0.08Ge1-xSnx (x = 0.02, 0.05, and 0.1) were investigated. A first-order magnetic transition was observed, which was accompanied by the martensitic transformation from a hexagonal Ni2In-Type to an orthorhombic TiNiSi-Type structure in the vicinity of 320K for x = 0.02 and 170K for x = 0.05 with thermal hysteresis of approximately 20 K. The magnetization of MnCo0.92Fe0.08Ge0.95Sn0.05 was estimated to be 102Am2 kg-1 in 5 T at 10 K. High field magnetization curves up to 55 T for MnCo0.92Fe0.08Ge0.95Sn0.05indicated the field-induced martensitic transformation. M{\"o}ssbauer spectroscopy experiments revealed that Fe atoms occupied 79%85% in the Co-site and 21%15% in the Mn-site.",

keywords = "Martensitic transformation, Metamagnetic transition, MnCoGe, M{\"o}ssbauer spectroscopy, Powder X-ray diffraction, Pulsed magnetic fields",

author = "Masahira Onoue and Ryota Kobayashi and Yoshifuru Mitsui and Masahiko Hiroi and Kohki Takahashi and Akihiro Kondo and Koichi Kindo and Yoshiya Uwatoko and Keiichi Koyama",

year = "2018",

doi = "10.2320/matertrans.M2018183",

language = "English",

volume = "59",

pages = "1645--1650",

journal = "Materials Transactions",

issn = "1345-9678",

publisher = "Japan Institute of Metals (JIM)",

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TY - JOUR

T1 - Magnetic and structural properties of MnCoGe with minimal fe and sn substitution

AU - Onoue, Masahira

AU - Kobayashi, Ryota

AU - Mitsui, Yoshifuru

AU - Hiroi, Masahiko

AU - Takahashi, Kohki

AU - Kondo, Akihiro

AU - Kindo, Koichi

AU - Uwatoko, Yoshiya

AU - Koyama, Keiichi

PY - 2018

Y1 - 2018

N2 - The magnetic and structural properties of MnCo0.92Fe0.08Ge1-xSnx (x = 0.02, 0.05, and 0.1) were investigated. A first-order magnetic transition was observed, which was accompanied by the martensitic transformation from a hexagonal Ni2In-Type to an orthorhombic TiNiSi-Type structure in the vicinity of 320K for x = 0.02 and 170K for x = 0.05 with thermal hysteresis of approximately 20 K. The magnetization of MnCo0.92Fe0.08Ge0.95Sn0.05 was estimated to be 102Am2 kg-1 in 5 T at 10 K. High field magnetization curves up to 55 T for MnCo0.92Fe0.08Ge0.95Sn0.05indicated the field-induced martensitic transformation. Mössbauer spectroscopy experiments revealed that Fe atoms occupied 79%85% in the Co-site and 21%15% in the Mn-site.

AB - The magnetic and structural properties of MnCo0.92Fe0.08Ge1-xSnx (x = 0.02, 0.05, and 0.1) were investigated. A first-order magnetic transition was observed, which was accompanied by the martensitic transformation from a hexagonal Ni2In-Type to an orthorhombic TiNiSi-Type structure in the vicinity of 320K for x = 0.02 and 170K for x = 0.05 with thermal hysteresis of approximately 20 K. The magnetization of MnCo0.92Fe0.08Ge0.95Sn0.05 was estimated to be 102Am2 kg-1 in 5 T at 10 K. High field magnetization curves up to 55 T for MnCo0.92Fe0.08Ge0.95Sn0.05indicated the field-induced martensitic transformation. Mössbauer spectroscopy experiments revealed that Fe atoms occupied 79%85% in the Co-site and 21%15% in the Mn-site.

KW - Martensitic transformation

KW - Metamagnetic transition

KW - MnCoGe

KW - Mössbauer spectroscopy

KW - Powder X-ray diffraction

KW - Pulsed magnetic fields

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DO - 10.2320/matertrans.M2018183

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SP - 1645

EP - 1650

JO - Materials Transactions

JF - Materials Transactions

IS - 10

ER -

Magnetic and structural properties of MnCoGe with minimal fe and sn substitution

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