Magnetic and electrical/thermal transport properties of Mn-doped Mn+1AXn phase compounds Cr2-xMnxGaC (0 ≤ x ≤ 1)

被引：66

作者：

Lin, S. ^{[1
]}

Tong, P. ^{[1
]}

Wang, B. S. ^{[1
]}

Huang, Y. N. ^{[1
]}

Lu, W. J. ^{[1
]}

Shao, D. F. ^{[1
]}

Zhao, B. C. ^{[1
]}

Song, W. H. ^{[1
]}

Sun, Y. P. ^{[1
,2
]}

机构：

[1] Acad Sinica, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China

[2] Chinese Acad Sci, High Field Magnet Lab, Hefei 230031, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2013年 / 113卷 / 05期

基金：

中国国家自然科学基金;

关键词：

TI4ALN3; TI3AL1.1C1.8; HEAT;

D O I：

10.1063/1.4789954

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this paper, we report the effects of partial substitution of Mn for Cr on the structural, magnetic, and electrical/thermal transport properties of M(n+1)AX(n) phase compounds Cr2-xMnxGaC (0 <= x <= 1). As a result, the unit cell volume and the thermal conductivity decrease while the resistivity increases with increasing x. Interestingly, the magnetism of Cr2-xMnxGaC changes from the nonmagnetic Cr2GaC (x = 0) to the ferrimagnetic CrMnGaC (x = 1). In order to shed light on the discrepancy observed between Hall coefficient and Seebeck coefficient of Cr2GaC, the electrical conductivity, Hall coefficient, and magnetoresistance are analyzed within a two-band model. Furthermore, an upturn is observed in low-temperature specific heat of Cr2-xMnxGaC, which may be related with the magnetic Mn dopant. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4789954]

引用

页数：6

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