Magnetic properties of Mn1-xTMxAlGe (TM = V, Fe, Cu) with Cu2Sb-type structure

Kohei Noguchi; Hayato Masumitsu; Yoshifuru Mitsui; Rie Y. Umetsu; Masahiko Hiroi; Yoshiya Uwatoko; Keiichi Koyama

doi:10.1063/1.5043069

Magnetic properties of Mn_1-xTM_xAlGe (TM = V, Fe, Cu) with Cu₂Sb-type structure

Kohei Noguchi, Hayato Masumitsu, Yoshifuru Mitsui, Rie Y. Umetsu, Masahiko Hiroi, Yoshiya Uwatoko, Keiichi Koyama

IMR - Cooperative Research and Development Center for Advanced Materials

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

Abstract

The magnetic properties of Mn_1-xTM_xAlGe (TM = V, Fe and Cu) were investigated for x ≤ 0.2. The spontaneous magnetization decreased with increasing x. A remarkable decrease in the Curie temperature T_C was observed for TM = Fe. For ferromagnetic MnAlGe (x = 0) and TM = nonmagnetic Cu (x = 0.2), Curie-Weiss law was confirmed. The compounds with TM = V and Fe (x = 0.2) did not show Curie-Weiss law, and the data of reciprocal susceptibility vs. temperature bent, indicating change of the magnetism from ferromagnetism. Obtained results suggested that the magnetic moments of V and Fe were aligned antiparallel to those of Mn, resulting in the ferrimagnetism-like behavior.

Original language	English
Article number	101433
Journal	AIP Advances
Volume	8
Issue number	10
DOIs	https://doi.org/10.1063/1.5043069
Publication status	Published - 2018 Oct 1

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title = "Magnetic properties of Mn1-xTMxAlGe (TM = V, Fe, Cu) with Cu2Sb-type structure",

abstract = "The magnetic properties of Mn1-xTMxAlGe (TM = V, Fe and Cu) were investigated for x ≤ 0.2. The spontaneous magnetization decreased with increasing x. A remarkable decrease in the Curie temperature TC was observed for TM = Fe. For ferromagnetic MnAlGe (x = 0) and TM = nonmagnetic Cu (x = 0.2), Curie-Weiss law was confirmed. The compounds with TM = V and Fe (x = 0.2) did not show Curie-Weiss law, and the data of reciprocal susceptibility vs. temperature bent, indicating change of the magnetism from ferromagnetism. Obtained results suggested that the magnetic moments of V and Fe were aligned antiparallel to those of Mn, resulting in the ferrimagnetism-like behavior.",

author = "Kohei Noguchi and Hayato Masumitsu and Yoshifuru Mitsui and Umetsu, {Rie Y.} and Masahiko Hiroi and Yoshiya Uwatoko and Keiichi Koyama",

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T1 - Magnetic properties of Mn1-xTMxAlGe (TM = V, Fe, Cu) with Cu2Sb-type structure

AU - Noguchi, Kohei

AU - Masumitsu, Hayato

AU - Mitsui, Yoshifuru

AU - Umetsu, Rie Y.

AU - Hiroi, Masahiko

AU - Uwatoko, Yoshiya

AU - Koyama, Keiichi

PY - 2018/10/1

Y1 - 2018/10/1

N2 - The magnetic properties of Mn1-xTMxAlGe (TM = V, Fe and Cu) were investigated for x ≤ 0.2. The spontaneous magnetization decreased with increasing x. A remarkable decrease in the Curie temperature TC was observed for TM = Fe. For ferromagnetic MnAlGe (x = 0) and TM = nonmagnetic Cu (x = 0.2), Curie-Weiss law was confirmed. The compounds with TM = V and Fe (x = 0.2) did not show Curie-Weiss law, and the data of reciprocal susceptibility vs. temperature bent, indicating change of the magnetism from ferromagnetism. Obtained results suggested that the magnetic moments of V and Fe were aligned antiparallel to those of Mn, resulting in the ferrimagnetism-like behavior.

AB - The magnetic properties of Mn1-xTMxAlGe (TM = V, Fe and Cu) were investigated for x ≤ 0.2. The spontaneous magnetization decreased with increasing x. A remarkable decrease in the Curie temperature TC was observed for TM = Fe. For ferromagnetic MnAlGe (x = 0) and TM = nonmagnetic Cu (x = 0.2), Curie-Weiss law was confirmed. The compounds with TM = V and Fe (x = 0.2) did not show Curie-Weiss law, and the data of reciprocal susceptibility vs. temperature bent, indicating change of the magnetism from ferromagnetism. Obtained results suggested that the magnetic moments of V and Fe were aligned antiparallel to those of Mn, resulting in the ferrimagnetism-like behavior.

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Magnetic properties of Mn_1-xTM_xAlGe (TM = V, Fe, Cu) with Cu₂Sb-type structure

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