Dimensionality Effects in FeGe2 Nanowires: Enhanced Anisotropic Magnetization and Anomalous Electrical Transport

被引：9

作者：

Tang, Siwei ^{[1
,2
,3
]}

Kravchenko, Ivan ^{[3
]}

Ward, T. Z. ^{[4
]}

Zou, Qiang ^{[3
]}

Yi, Jieyu ^{[2
,3
]}

Ma, Cheng ^{[3
]}

Chi, Miaofang ^{[3
]}

Cao, Guixin ^{[3
]}

Li, An-Ping ^{[3
]}

Mandrus, David ^{[2
,4
]}

Gai, Zheng ^{[3
]}

机构：

[1] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China

[2] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

[3] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA

[4] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

来源：

SCIENTIFIC REPORTS | 2017年 / 7卷

基金：

美国国家科学基金会;

关键词：

DENSITY-WAVE ANTIFERROMAGNETISM; MNSI NANOWIRES; PHASE-DIAGRAM; NANOSTRUCTURES; STABILIZATION; DYNAMICS; GROWTH;

D O I：

10.1038/s41598-017-05771-6

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We report the synthesis of single-crystal iron germanium nanowires via chemical vapor deposition without the assistance of any catalysts. The assembly of single-crystal FeGe2 nanowires with tetragonal C16 crystal structure shows anisotropic magnetic behavior along the radial direction or the growth axial direction, with both antiferromagnetic and ferromagnetic orders. Single FeGe2 nanowire devices were fabricated using e-beam lithography. Electronic transport measurement in these devices show two resistivity anomalies near 250 K and 200 K which are likely signatures of the two spin density wave states in FeGe2.

引用

页数：8

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