pattern formation in isothermally non-seeded melt-textured with 15 wt% addition

Optically polarized light micrographs of isothermally melt-textured compounds (with 15 wt% addition) are presented to show evidence for pattern formation of particles in grains. Different types of pattern were observed and were understood as arising from the crystal growth mechanism of 123 melt-textured materials. In an appendix, the case of patterns in magnetically textured samples is discussed.

[1]  M. Ausloos,et al.  Polarized light microstructure analysis of melt-textured DyBa_2Cu_3O_7−x ceramics , 1996 .

[2]  C. Varanasi,et al.  The demonstration of Y_2BaCuO_5 particle segregation in melt-processed YBa_2Cu_3O_7−x through a computer visualization model , 1996 .

[3]  G. Hong,et al.  NONUNIFORM DISTRIBUTION OF SECOND PHASE PARTICLES IN MELT-TEXTURED Y-BA-CU-O OXIDE WITH METAL OXIDE (CEO2, SNO2, AND ZRO2) ADDITION , 1995 .

[4]  M. Ausloos,et al.  Simulated growth and microstructure of DyBa_2Cu_3O_7−x with and without Dy_2BaCuO_5 addition , 1995 .

[5]  M. Ausloos,et al.  Crystal morphology and three‐dimensional‐like growth model of DyBa2Cu3O7−d superconducting materials synthesized in situ in 0.6 T , 1994 .

[6]  G. Hong,et al.  Y2BaCuO5 morphology in melt-textured Y-Ba-Cu-O oxides with PtO2.H2O/CeO2 additions , 1994 .

[7]  J. Fagan,et al.  The effects of impurity oxides on YBa2Cu3O7−x microstructure development , 1994 .

[8]  K. Salama,et al.  Progress in melt texturing of YBa2Cu3Ox superconductor , 1994 .

[9]  P. McGinn,et al.  Morphology of Y2BaCuO5 and segregation of second phase particles in melt-textured YBaCu oxides with/without BaCeO3 addition , 1994 .

[10]  P. Odier,et al.  Nucleation and growth mechanisms of textured YBaCuO and the influence of Y2BaCuO5 , 1994 .

[11]  G. Schmitz,et al.  Influence of Y2BaCuO5 particles on the growth morphology of peritectically solidified YBa2Cu3O7−x , 1993 .

[12]  A. Goyal,et al.  Solidification of YBa2Cu3O7−δ from the melt , 1993 .

[13]  H. Moon,et al.  The effect of Y2Ba1Cu1O5 addition on microstructure and formation of microcracks in the partially melted Y-Ba-Cu-O oxides , 1993 .

[14]  C. Varanasi,et al.  The effect of PtO2·H2O additions on the Y2BaCuO5 morphology in melt textured YBa2Cu3O7−χ , 1993 .

[15]  D. Bourgault,et al.  Material processing in high static magnetic field. A review of an experimental study on levitation, phase separation, convection and texturation , 1993 .

[16]  M. Murakami,et al.  Effect of Y2BaCuO5 on fracture toughness of YBCO prepared by a MPMG process , 1992 .

[17]  T. Tiefel,et al.  Formation of layered microstructure in the Y-Ba-Cu-O and Bi-Sr-Ca-Cu-O superconductors , 1992 .

[18]  T. Sung,et al.  Reaction mechanism of Y-system superconductors in the MPMG method , 1992 .

[19]  Salama,et al.  Microstructure within domains of melt-processed YBa2Cu3O7-x superconductors. , 1992, Physical review. B, Condensed matter.

[20]  Y. Shiohara,et al.  Growth mechanism of YBa_2cu_3o_y superconductors prepared by the horizontal Bridgman method , 1992 .

[21]  M. Murakami,et al.  Critical currents and flux creep in melt processed high Tc oxide superconductors , 1990 .

[22]  D. Murphy,et al.  Crystal structure of the high- T c superconductor Ba 2 YCu 3 O 9 − δ , 1987 .

[23]  Chu,et al.  Crystallographic description of phases in the Y-Ba-Cu-O superconductor. , 1987, Physical review. B, Condensed matter.

[24]  J. Tarascon,et al.  Chemical Doping and Physical Properties of the New High Temperature Superconducting Perovskites , 1987 .

[25]  D. Uhlmann,et al.  Interaction Between Particles and a Solid‐Liquid Interface , 1964 .