TY - JOUR
T1 - Microstructure and properties of superconducting, ferromagnetic and hybrid nanowire networks of La1.85Sr0.15CuO4 and La0.5Sr0.5MnO3
AU - Koblischka, M. R.
AU - Koblischka-Veneva, A.
AU - Zeng, X. L.
AU - Karwoth, T.
N1 - Funding Information:
We thank J. Schmauch (Saarland University, group Prof. Birringer) for technical assistance and Prof. V. Presser for the use of the electrospinning apparatus. This work is supported by DFG grant Ko2323/8, which is gratefully acknowledged.
Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2019/9/30
Y1 - 2019/9/30
N2 - We have successfully fabricated La1-xSrxMnO3 (LSMO) nanowires with various x level, and La1.85Sr0.15CuO4 (LSCO) nanowires/nanoribbons via electrospinning. The colossal magnetoresistance (CMR) of the LSMO nanowire networks have been investigated. and the Tc of the LSCO nanowires and nanoribbons are around 19.2 K and 29.3 K respectively. Furthermore, we have established a LSCO/LSMO nanowire hybrid system. From obervation by scanning electron microscopy, the average diameter of the nanowires is around 220 nm and the average length can reach over 50 μmm. The randomly aligned LSCO and LSMO nanowires show numerous connections and form a complicated hybrid network system. The nanowires are polycrystalline with the grain size of ∼30 nm as confirmed by transmission electron microscopy and EBSD. According to four-probe electrical transportation measurements, the superconductivity of the hybrid sample is suppressed and an anti-magnetoresistance effect is observed. SQUID measurements of M(T) and M(H) were carried out as well, revealing the soft magnetic character of the nanowires.
AB - We have successfully fabricated La1-xSrxMnO3 (LSMO) nanowires with various x level, and La1.85Sr0.15CuO4 (LSCO) nanowires/nanoribbons via electrospinning. The colossal magnetoresistance (CMR) of the LSMO nanowire networks have been investigated. and the Tc of the LSCO nanowires and nanoribbons are around 19.2 K and 29.3 K respectively. Furthermore, we have established a LSCO/LSMO nanowire hybrid system. From obervation by scanning electron microscopy, the average diameter of the nanowires is around 220 nm and the average length can reach over 50 μmm. The randomly aligned LSCO and LSMO nanowires show numerous connections and form a complicated hybrid network system. The nanowires are polycrystalline with the grain size of ∼30 nm as confirmed by transmission electron microscopy and EBSD. According to four-probe electrical transportation measurements, the superconductivity of the hybrid sample is suppressed and an anti-magnetoresistance effect is observed. SQUID measurements of M(T) and M(H) were carried out as well, revealing the soft magnetic character of the nanowires.
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U2 - 10.1088/1757-899X/625/1/012028
DO - 10.1088/1757-899X/625/1/012028
M3 - Conference article
AN - SCOPUS:85074775872
SN - 1757-8981
VL - 625
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
IS - 1
M1 - 012028
T2 - 2019 3rd International Conference on Materials Engineering and Nano Sciences, ICMENS 2019
Y2 - 26 March 2019 through 28 March 2019
ER -