Analysis of observed voltage oscillations in silver doped high temperature superconductor ybco
Yükleniyor...
Dosyalar
Tarih
2018
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Polish Acad Sciences Inst Physics
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The effect of square wave current was investigated by the voltage time (V-t curves) measurements at various external magnetic fields and periods (P) in silver doped YBCO. The general sinusoidal behavior of V-t curves was mainly interpreted as a dynamic competition between driving and pinning forces. It is observed that as the period of square wave current is increased, the amplitude of oscillation is also increased. The observed oscillations in the voltage was fitted by an common sinusoidal equation V(t) similar to sin(omega t + phi). It is also found that there is different phase angle phi values for each cycle. Fast Fourier transform measurements is applied to oscillation period (P-I) of the square wave current. The results give us that a physical mechanism is related with charge density waves. Intrinsically, in Ag doped YBCO, the pinned flux line system evokes the general behavior of charge density waves. Due to properties of the converting the square wave current to sinusoidal voltage oscillations, Ag doped YBCO sample can behave as double-integrator for the defined period, amplitude of square wave current and magnetic field values in time.
Açıklama
5th International Conference on Oxide Materials for Electronic Engineering - Fabrication, Properties and Applications (OMEE) -- MAY 29-JUN 02, 2017 -- Lviv, UKRAINE
Anahtar Kelimeler
Cuprate Superconductors
Kaynak
Acta Physica Polonica A
WoS Q Değeri
Q4
Scopus Q Değeri
Q4
Cilt
133
Sayı
4
