“Magnetic and structural characterization

of inkjet-printed TFAYBa2Cu3O7-X

/MODCZO/ABADYSZ/SS

coated conductors”

Student : Maycon RottaAdvisor : Prof. Dr. Rafael Zadorosny

1

Superconductors and your Properties

2

Magnetic Levitation Electric Conductors

MAGLEV TRAINMagnetic Resonance

SOME PROPERTIES OF SUPERCONDUCTORS

3

Cv

Tc

T

MODELDebye

EXPONENTIAL DECAY

4

SOME PROPERTIES OF SUPERCONDUCTORS

NORMALMEISSNER EFFECT

TYPE - I AND II SUPERCONDUCTORS

5

Orthorhombic YBCO

(Perovskite structure)

The Substrate

6

SSYSZ

4mm

1mm

CZOBuffer layer – 20 – 30nm

2D XRD diffraction Pattern

Superconducting Layer

SSYSZ

4mm

1mm

CZO

Spin-coating

YBCO – 0,25 µm

SSYSZ

4mm

1mm

CZO

Inkjet printing

YBCO – 0,9 µm

2D XRD diffraction Pattern and SEM micrograph images

7

Scanning Transmission Microscopy - STEM

8

DC Magnetic CharacterizationJC

GB(H) = 3M(H)/R

77 KIcGB 0,9 = 117 A/cmIcGB 0,25 = 45 A/cm

12%

28%

9

10

DC Magnetic CharacterizationPalau's method

32,5%

CONCLUSIONS

• A ceria buffer as thin as 20 nm, grown epitaxially by MOD,

was sufficient to achieve a high degree of flatness and high

quality of the subsequent YBCO layers;

• The inkjet printing has been validated as a useful deposition

technique for the TFAYBCO film, achieving a thickness of 0,9

µm after a three-cycle multideposition process with

intermediate pyrolysis steps.

11

12

CONCLUSIONS

• Highly homogeneous YBCO films obtained by inkjet printing,

exhibit a percolative critical current density of JcGB = 1,3 MA/

cm2 at 77 K and self-field, i.e. Ic = 117 A/cm-width.

• Further progress is expected by increasing the thickness of

the superconductor layer by multilayer inkjet printing

deposition, while adjusting the processing parameters

during growth, in order to push the Ic and intragrain JcG;

Acknowledgments

• Post-Graduate Program in Materials Science –

Campus Ilha Solteira UNESP;

• Special thanks to Prof. Rafael Zadorosny;

• Thank you for the patience and attention;

13

14

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