Preparation and low-temperature electrical and magnetic properties of La0.33Pr0.34Ca0.33MnO3 nanofibers via electrospinning

被引：13

作者：

Sui, Jin-Xia ^{[1
]}

Wang, Xiao-Xiong ^{[1
]}

Song, Chao ^{[1
]}

Liu, Qi ^{[1
]}

Yuan, Feng ^{[1
]}

Long, Yun-Ze ^{[1
]}

机构：

[1] Qingdao Univ, Coll Phys, Collaborat Innovat Ctr Nanomat & Devices, Qingdao 266071, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2018年 / 467卷

基金：

中国国家自然科学基金;

关键词：

COULOMB-BLOCKADE; PHASE-SEPARATION; FILMS; MAGNETORESISTANCE; COEXISTENCE; FABRICATION; DISORDER; STRAIN;

D O I：

10.1016/j.jmmm.2018.07.060

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We systematically studied the structure, magnetism, resistance, magnetoresistance (MR) and nonlinear current-voltage (I-V) curves of La0.33Pr0.34Ca0.33MnO3 (LPCMO) nanofibers via electrospinning and followed calcination. Magnetic study shows that this nanosystem can form long-range order and generate spin-glass states at low temperatures. The resistance and MR studies indicate the presence of metal insulator transitions and colossal MR effects in the system, respectively. One-dimensional variable range hopping (1D VRH) model is used to explain the high-temperature segment behavior of resistance and MR. The behavior of the nonlinear I-V curves indicates the exist of threshold voltage and zero bias conductance at low temperatures in the LPCMO nanowires, which represents the existence of Coulomb gap.

引用

页码：74 / 81

页数：8

共 52 条

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