Magnetic Field Dependence of Critical Current Density and Microstructure in ${\rm Sm}_{1+x}{\rm Ba}_{2-x}{\rm Cu}_{3}{\rm O}_{y}$ Films on Metallic Substrates

Superconducting properties in magnetic fields of LTG-Sm1+xBa2−xCu3Oy films on Ni–W textured substrate

“…We found that the LTG-SmBCO film on Ni-W was grown up by 2D island growth mode as well as that on IBAD and MgO as shown in Ref. [5,7]. From the AFM images, the average grain size (d grain ) of the LTG-SmBCO film was about 230 nm and the value was one-third of PLD-SmBCO film.…”

“…were also plotted. On the other hand, under a high magnetic field (B > 1 T), the Smrich low-T c phases would become a normal state and then contribute to pinning centers [5], so that the J c /J c s.f. -B should be affected by the low-T c phases and the dislocations.…”

“…From previous work, it's reported that the dislocations in SmBCO film on MgO act as c-axis correlated pinning centers (PC) in magnetic fields [4]. The LTG-SmBCO film on PLD-CeO 2 /ion beam assisted deposition (IBAD)-yttrium stabilized zirconium (YSZ)/Hastelloy (hereafter referred to as IBAD) showed high crystal quality compared with the PLD-SmBCO film [5].…”

Influence of nanoparticles on critical current properties in TFA-MOD processed YGdBCO coated conductor

“…The critical current density is required to be high for all directions of the magnetic field for applications for electric power devices such as transformer and superconducting magnetic energy storage (SMES). It is known that J c of REBCO thin films in the magnetic field is greatly improved by introduction of a non-superconducting phase at the nanometer scale [1][2][3][4][5]. Recently, it was reported that a very high flux pinning force in a magnetic field has been obtained at 77 K for the MOD processed Y 1-x Gd x Ba 2 Cu 3 O y (YGdBCO) coated conductor with BaZrO 3 (BZO) fabricated from a starting solution containing Zr-naphthenate salt [6].…”

Enhancement of critical temperature of LaBa2Cu3Oy thin films by novel film growth technique

“…Furthermore, we developed novel thin film growth technique named low temperature growth (LTG) technique [9]. SmBa 2 Cu 3 O y (Sm123) films grown by this technique exhibited excellent superconducting properties in magnetic fields due to the low growth temperature of Sm123 films [10,11]. From the cross sectional transmission electron microscopy (TEM) observation, the LTG-Sm123 films included a phase separation of stoichiometric matrix and Sm-rich solid solutions with tens of nanometers in diameter [12].…”