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Mechanical properties of DyBa2Cu3Ox (Dy123) single-grain bulks were evaluated at 77 K through bending tests of specimens cut from the bulks. While a Dy123 bulk fabricated in air had pores in the inner region of it, Dy123 bulks fabricated by heating precursors in O2 atmosphere had few pores. The bending strengths of the porous bulk and the low porosity bulks at 77 K were higher than those at room temperature...
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