Electron spin resonance — method for measurement of the effective susceptibility at the surface of Y:123 superconductor
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POP, Aurel V., GIURGIU, L., DARABONT, Al., GERU, Ion. Electron spin resonance — method for measurement of the effective susceptibility at the surface of Y:123 superconductor. In: Magnetic resonance in condensed matter, 11-12 octombrie 2007, Chișinău. Chișinău, Republica Moldova: 2007, p. 52.
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Magnetic resonance in condensed matter 2007
Simpozionul "Magnetic resonance in condenced matter"
Chișinău, Moldova, 11-12 octombrie 2007

Electron spin resonance — method for measurement of the effective susceptibility at the surface of Y:123 superconductor


Pag. 52-52

Pop Aurel V.1, Giurgiu L.2, Darabont Al.1, Geru Ion3
 
1 Babeș-Bolyai University,
2 Institutul Naţional de Cercetare-Dezvoltare pentru Tehnologii Izotopice şi Moleculare,
3 Center of Metrology, Automation and Scientific Research Work, Academy of Sciences of Moldova
 
 
Disponibil în IBN: 12 mai 2020


Rezumat

ESR method was used for directely measuring the response of the superconductor to an external field Hc1 < Hext < Hc2. The surface effective susceptibility below TC was determined from ESR measurements of local field intensities obtained with two DPPH paramagnetic markers located to the cylindrical surface of Y:123 superconductor. Our results were explained in relation with the field distribution at the surface and by different grain structures. The appearance of two resolved ESR lines at TC = 90.2 K were correlated by the AC magnetic susceptibility measurements.