TY - JOUR
T1 - Structure and formation mechanism of subgrains in large single-grain RE-Ba-Cu-O (RE = Y, Sm, Nd) bulk superconductors
AU - Ogasawara, K.
AU - Sakai, N.
AU - Murakami, M.
N1 - Funding Information:
This work was supported by the New Energy and Industrial Technology Development Organization (NEDO) as Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications under the New Sunshine Program administered by the Agency of Industrial Science and Technology (AIST) of the Ministry of International Trade and Industry (MITI) of Japan.
PY - 2001/8
Y1 - 2001/8
N2 - We have studied the subgrain structures in large single-grain RE-Ba-Cu-O (RE = Y, Nd, Sm) bulk superconductors with polarized optical microscopic observations and micro-area X-ray pole figure measurements. Subgrains were formed in the early stage of grain growth, and were elongated along the growth direction with increasing their misalignment. Based on the comparative study of misorientation angles with the geometry of the second-phase particles, as well as microstructural defect studies using transmission electron microscope, the subgrains are created by the particle incorporation and their related lattice defects through the instability at the solidification front.
AB - We have studied the subgrain structures in large single-grain RE-Ba-Cu-O (RE = Y, Nd, Sm) bulk superconductors with polarized optical microscopic observations and micro-area X-ray pole figure measurements. Subgrains were formed in the early stage of grain growth, and were elongated along the growth direction with increasing their misalignment. Based on the comparative study of misorientation angles with the geometry of the second-phase particles, as well as microstructural defect studies using transmission electron microscope, the subgrains are created by the particle incorporation and their related lattice defects through the instability at the solidification front.
KW - Microscopy
KW - Misorientation
KW - Pole figure
KW - REBCO
KW - Subgrain
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U2 - 10.1016/S0921-4534(01)00313-6
DO - 10.1016/S0921-4534(01)00313-6
M3 - Article
AN - SCOPUS:0035423379
SN - 0921-4534
VL - 357-360
SP - 685
EP - 689
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - SUPPL. 2
ER -