Superconducting properties of aligned crystalline grains of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Y</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Ba</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Cu</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mrow><mml:mn>7</mml:mn><mml:mo>−</mml:mo><mml:mi>δ</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>
D. E. FarrellDepartment of Physics, Case Western Reserve University, Cleveland, Ohio 44106B. S. ChandrasekharDepartment of Physics, Case Western Reserve University, Cleveland, Ohio 44106M. R. DeGuireDepartment of Physics, Case Western Reserve University, Cleveland, Ohio 44106Ming FangDepartment of Physics, Case Western Reserve University, Cleveland, Ohio 44106V. G. KoganDepartment of Physics, Case Western Reserve University, Cleveland, Ohio 44106John R. ClemDepartment of Physics, Case Western Reserve University, Cleveland, Ohio 44106D. K. FinnemoreDepartment of Physics, Case Western Reserve University, Cleveland, Ohio 44106
1987lv
ABI
Annotatsiya
A new method has been used to produce uniaxially aligned small single crystals of ${\mathrm{Y}}_{1}{\mathrm{Ba}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{7\ensuremath{-}\ensuremath{\delta}}$. The superconducting critical current deduced from magnetization data is strongly field dependent and highly anisotropic. In the basal plane at $T=4.2$ K we estimate that the critical current at zero field is in excess of ${10}^{7}$ A/${\mathrm{cm}}^{2}$.
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