Effect of Short-Range Ferromagnetic Ordering on the Electrical Transport Properties of (La0.9Bi0.1)2/3Ca1/3MnO3 in the Magnetic Field up to 40 T

2013 ◽  
Vol 174 (3-4) ◽  
pp. 207-213 ◽  
Author(s):  
Yuying Wu ◽  
Zhengcai Xia ◽  
Gufei Zhang ◽  
Johan Vanacken
SPIN ◽  
2016 ◽  
Vol 07 (02) ◽  
pp. 1750001 ◽  
Author(s):  
Han-Chun Wu ◽  
Xiao Liu ◽  
Cormac Ó. Coileáin ◽  
Hongjun Xu ◽  
Mourad Abid ◽  
...  

Magnetite is a highly utilized transition metal oxide with many interesting magnetic and transport properties. The presence of anti-phase boundaries (APBs) and charge-orbital ordering (COO) are two of the most exciting properties of epitaxial magnetite thin films. Here, epitaxial stepped Fe3O4 films were prepared to investigate the competition between APBs and COO via measurements of in-plane anisotropy. The anisotropy was probed for two orthogonal configurations, with magnetic field applied or electrical-contacts aligned either along or perpendicular to the steps. We reveal that the APBs dominate the magnetic and transport properties of the films above the Verwey transition temperature ([Formula: see text]. However, below [Formula: see text] film thickness becomes a decisive factor in determining the magnetic nature of stepped magnetite films, due to its correlation with domain size. When the film is thinner than a critical thickness, the anisotropy is dominated by the APBs, and a higher anisotropy constant and MR ratio are observed when the magnetic field or contacts are oriented along the steps. Conversely, for sufficiently thick films, below [Formula: see text], the magnetic and electrical transport properties are dominated by COO. Thus a higher anisotropy constant and MR ratio are observed when the magnetic field or contacts are oriented perpendicular to the steps.


2021 ◽  
Vol 64 (8) ◽  
Author(s):  
HongHui Wang ◽  
ZhaoHui Cheng ◽  
MengZhu Shi ◽  
DongHui Ma ◽  
WeiZhuang Zhuo ◽  
...  

2016 ◽  
Vol 42 (5) ◽  
pp. 6107-6114 ◽  
Author(s):  
Yanyan Xu ◽  
Xiurong Qu ◽  
Shuchen Lü ◽  
Yu Qian ◽  
Jianmin Hu ◽  
...  

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Y. Yin ◽  
J. C. Han ◽  
T. P. Ying ◽  
J. K. Jian ◽  
Z. H. Zhang ◽  
...  

We synthesized Mn3Zn0.9Cu0.1N by solid state reaction, and magnetic as well as electrical transport properties were investigated. It is found that Mn3Zn0.9Cu0.1N exhibits a first-order antiferromagnetism (AFM) to paramagnetic (PM) transition with the Néel temperatureTN~163 K, and substitution of Cu for Zn would favor ferromagnetism (FM) state and weaken AFM ground state, leading to a convex curvature character ofM(T)curve. With high external fields 10 kOe–50 kOe, magnetic transition remains a robust AFM-PM feature while FM phase is completely suppressed. Thermal hysteresis ofM(T)under 500 Oe is also suppressed when the magnetic field exceeds 10 kOe. Mn3Zn0.9Cu0.1N exhibits a good metallic behavior except for a slope change aroundTN, which is closely related to AFM-PM magnetic transition. Compared with the first differential of resistivity with respect to temperature for(dρ/dT)Mn3ZnNin transition temperature range, the absolute value of(dρ/dT)Mn3Zn0.9Cu0.1Nis much lower which is close to zero.


2012 ◽  
Author(s):  
S. Dlimi ◽  
A. El kaaouachi ◽  
R. Abdia ◽  
A. Narjis ◽  
G. Biskupski ◽  
...  

2012 ◽  
Vol 391 ◽  
pp. 012116 ◽  
Author(s):  
Y Zou ◽  
M Sutherland ◽  
S Friedemann ◽  
S M Hayden ◽  
D Rothfuss ◽  
...  

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