Improved Superconducting Properties for Multifilament Graphene-Coated Nb Addition MgB2 Wires by an Internal Mg Diffusion Process.

التفاصيل البيبلوغرافية
العنوان:	Improved Superconducting Properties for Multifilament Graphene-Coated Nb Addition MgB2 Wires by an Internal Mg Diffusion Process.
المؤلفون:	Liu, H. R., Yang, F., Han, F. G., Xie, Z. W., Jin, L. H., Wang, Q. Y., Xiong, X. M., Feng, J. Q., Li, C. S., Li, K. Z., Zhou, L.
المصدر:	Journal of Superconductivity & Novel Magnetism; Feb2022, Vol. 35 Issue 2, p429-434, 6p
مصطلحات موضوعية:	WIRE, FLUX pinning, CRITICAL currents, SUPERCONDUCTIVITY, FIBERS
مستخلص:	A novel method is presented for the production of the 6 + 1 filament MgB2 wires using internal Mg diffusion (IMD) process. For the MgB2 long wire with 1.4-mm diameter produced by graphene-coated Nb addition, the critical current (Ic) is about 1000 A at 4 T and 4.2 K, which is 2.5 times higher than that of the undoped sample. The increased Ic is attributed to the enhanced flux pinning force and improved grain connectivity. The obtained results show that graphene-coated Nb addition MgB2 wires have excellent superconductivity and mechanical property compared with the conventional PIT wires in practical application. [ABSTRACT FROM AUTHOR]
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قاعدة البيانات:	Complementary Index

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