Batch production of high-quality-customized-shaped-monolithic HTSC

Novel seed for batch cold seeding production of GdBaCuO bulks

“…The trapped field also exceeded the recently reported result in 26 mm GdBCO/Ag single grain containing Gd-2411 (Nb) fabricated in air [21]. For batch process normally several researchers use the commercial RE-123/RE-211 powders [22][23][24], which are around 10 times expensive than RE-123/RE-211 made in research organizations where starting from the oxides, first the RE-123/RE-211 compounds are made and then they are ground to powders. This process is called self-making in our texts.…”

Nanoindentation of Bridgman YBCO samples

“…The calcined powder was deagglomerated by ball milling in agate mortar. The powder was compressed under isostatic pressure as a bar and inserted into the furnace at the peritectic temperature (1010 °C); the semisolid bars were hung inside the furnace and moved at a constant rate of 1 mm/h through a region with an axial temperature gradient of 20 K cm~ at the peritectic temperature [23]. After the texturing process, YBaCuO pieces were oxygenated in a horizontal furnace at 450 °C for 240 h [22].…”

“…After the texturing process, YBaCuO pieces were oxygenated in a horizontal furnace at 450 °C for 240 h [22]. From the oxygenated pieces with a common c-axis tilt of 45° from the longitudinal direction of the bar, small pieces of 2 mm height were cut along the ab-plane or (0 0 1) [23]. Prior to nanoindentation, the sintered specimens were polished with diamond suspensions of 6, 3, 1, and 1/4 |jim and colloidal silica dissolved in isopropanol.…”

Magneto‐transport properties of polycrystalline YBa2(Cu1‐xMx)3O7‐δ (M = B and Mn)

“…Defects created in the HTSCs using several types of energetic radiations were found to be very successful in increasing the vortex pinning forces [2][3][4][5]. Other techniques have been used during the sample preparation by changing the heat treatment where good quality samples might be obtained to carry high currents [6,7]. Introducing nano-particles in bulk superconductors has been also used to increase the pinning forces [8,9] and thus to enhance J c .…”