TY - JOUR
T1 - Effects of three different homemade nanocarbons doping on the superconducting properties of MgB2 tapes
AU - Wang, Dongliang
AU - Zhang, Haitao
AU - Zhang, Xianping
AU - Tang, Shaopu
AU - Ma, Yanwei
AU - Oguro, Hidetoshi
AU - Awaji, Satoshi
AU - Watanabe, Kazuo
N1 - Funding Information:
This work is partially supported by the National Natural Science Foundation of China (Grant Nos. 51025726, 51202243 and 51104136).
Publisher Copyright:
©2014 Elsevier B.V. All rights reserved.
PY - 2015/1/15
Y1 - 2015/1/15
N2 - The doping effects of three different homemade nanocarbons on microstructure and superconducting properties of in situ powder-in-tube (PIT) processed MgB2/Fe tapes were studied. Compared with pure tapes, all homemade nano-carbon additions led to an order of magnitude enhancement of the supercurrent at 4.2 K, 10 T. Among them, hollow carbon nanoboxes doped samples exhibited the highest transport Jc-B properties, about 3.4 × 104 A cm-2 at 4.2 K, 10 T (Je ∼ 104 A cm-2). The large Jc improvements of doped samples are thought to be attributed to the enhancement of flux pinning force. It is also interesting that the change of microstructure and critical field of three nanocarbons doped MgB2 samples are not obvious, which mainly because that the performance parameters of these nanocarbons with different morphologies are almost same.
AB - The doping effects of three different homemade nanocarbons on microstructure and superconducting properties of in situ powder-in-tube (PIT) processed MgB2/Fe tapes were studied. Compared with pure tapes, all homemade nano-carbon additions led to an order of magnitude enhancement of the supercurrent at 4.2 K, 10 T. Among them, hollow carbon nanoboxes doped samples exhibited the highest transport Jc-B properties, about 3.4 × 104 A cm-2 at 4.2 K, 10 T (Je ∼ 104 A cm-2). The large Jc improvements of doped samples are thought to be attributed to the enhancement of flux pinning force. It is also interesting that the change of microstructure and critical field of three nanocarbons doped MgB2 samples are not obvious, which mainly because that the performance parameters of these nanocarbons with different morphologies are almost same.
KW - Homemade nanocarbon doping
KW - MgB tapes
KW - Transport properties
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U2 - 10.1016/j.physc.2014.11.004
DO - 10.1016/j.physc.2014.11.004
M3 - Article
AN - SCOPUS:84918771888
SN - 0921-4534
VL - 508
SP - 49
EP - 55
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
ER -