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Preparation method of yttrium barium copper oxide superconductive block material doped with nano nickel ferrite
The invention discloses a preparation method of an yttrium barium copper oxide superconductive block material doped with nano nickel ferrite. The method includes the steps of preparing a solid phase powder, preparing a liquid phase source powder, press-moulding a precursor block, assembling the precursor block, growing a yttrium barium copper oxide single domain block material through infiltration, and performing oxygen permeation treatment. By means of doping of the nano particles of the nickel ferrite into the solid phase block and through high-temperature infiltration and slow-cooling growth, element replacement of nickel and iron to the element at copper position in the YBa<2>Cu<3>O<7-[delta]> phase is initiated in the yttrium barium copper oxide superconductive block material, so that component fluctuation and weak superconductive zones appear in the superconductive substrate, thereby increasing [delta]T-typed pinning of the sample and further achieving better superconductive performances. In addition, there is only the BaCuO2 required as a precursor powder in the whole infiltration process, so that the preparation method is simple and efficient in process.
Preparation method of yttrium barium copper oxide superconductive block material doped with nano nickel ferrite
The invention discloses a preparation method of an yttrium barium copper oxide superconductive block material doped with nano nickel ferrite. The method includes the steps of preparing a solid phase powder, preparing a liquid phase source powder, press-moulding a precursor block, assembling the precursor block, growing a yttrium barium copper oxide single domain block material through infiltration, and performing oxygen permeation treatment. By means of doping of the nano particles of the nickel ferrite into the solid phase block and through high-temperature infiltration and slow-cooling growth, element replacement of nickel and iron to the element at copper position in the YBa<2>Cu<3>O<7-[delta]> phase is initiated in the yttrium barium copper oxide superconductive block material, so that component fluctuation and weak superconductive zones appear in the superconductive substrate, thereby increasing [delta]T-typed pinning of the sample and further achieving better superconductive performances. In addition, there is only the BaCuO2 required as a precursor powder in the whole infiltration process, so that the preparation method is simple and efficient in process.
Preparation method of yttrium barium copper oxide superconductive block material doped with nano nickel ferrite
LI GUOZHENG (author)
2016-01-13
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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