Practical magnetic pinning in YBCO

Practical magnetic pinning in YBCO. Wimbush, S. C., Durrell, J. H., Bali, R., Rong Yu, Haiyan Wang, Harrington, S. A., & MacManus-Driscoll, J. L. IEEE Trans. Appl. Supercond., 19(3):3148–3151, June, 2009.

Paper doi abstract bibtex

Iron-containing oxide inclusions have been incorporated as nanoscale ferromagnetic precipitate flux pinning centers within pulsed laser deposited YBa$_{\textrm{2}}$Cu$_{\textrm{3}}$O$_{\textrm{7−δ}}$ (YBCO) thin films via a simple process utilizing a composite deposition target. The resultant films exhibit a coexistence of superconductivity and ferromagnetism at 77 K, and a consequent significant enhancement in their absolute critical current density, J$_{\textrm{c}}$, compared to pure YBCO films prepared under the same conditions. ‘Poisoning’ effects due to the incorporation of Fe into the YBCO matrix are avoided at sufficiently low concentrations of inclusions, where the greatest self-field Jc enhancement is seen, but do become increasingly evident as the concentration is increased. The process outlined has practical application in the synthesis of high-J$_{\textrm{c}}$ YBCO films, with the absolute J$_{\textrm{c}}$ values obtained in initial samples lying at the upper bound of reported values for samples produced worldwide to date.

@article{wimbush_practical_2009,
	title = {Practical magnetic pinning in {YBCO}},
	volume = {19},
	issn = {1051-8223},
	url = {/publications/10.1109/TASC.2009.2017861.pdf},
	doi = {10.1109/TASC.2009.2017861},
	abstract = {Iron-containing oxide inclusions have been incorporated as nanoscale ferromagnetic precipitate flux pinning centers within pulsed laser deposited YBa$_{\textrm{2}}$Cu$_{\textrm{3}}$O$_{\textrm{7−δ}}$ (YBCO) thin films via a simple process utilizing a composite deposition target. The resultant films exhibit a coexistence of superconductivity and ferromagnetism at 77 K, and a consequent significant enhancement in their absolute critical current density, \textit{J}$_{\textrm{c}}$, compared to pure YBCO films prepared under the same conditions. ‘Poisoning’ effects due to the incorporation of Fe into the YBCO matrix are avoided at sufficiently low concentrations of inclusions, where the greatest self-field Jc enhancement is seen, but do become increasingly evident as the concentration is increased. The process outlined has practical application in the synthesis of high-\textit{J}$_{\textrm{c}}$ YBCO films, with the absolute \textit{J}$_{\textrm{c}}$ values obtained in initial samples lying at the upper bound of reported values for samples produced worldwide to date.},
	language = {en},
	number = {3},
	journal = {IEEE Trans. Appl. Supercond.},
	author = {Wimbush, S. C. and Durrell, J. H. and Bali, R. and {Rong Yu} and {Haiyan Wang} and Harrington, S. A. and MacManus-Driscoll, J. L.},
	month = jun,
	year = {2009},
	pages = {3148--3151},
	file = {Wimbush et al. - 2009 - Practical magnetic pinning in YBCO.pdf:C\:\\Users\\scwim\\OneDrive\\Work\\Zotero Library\\Wimbush et al. - 2009 - Practical magnetic pinning in YBCO.pdf:application/pdf},
}

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