TY - JOUR
AU - K.H Young
AU - G.V Negrete
AU - R.B Hammond
AU - A Inam
AU - Ramamoorthy Ramesh
AU - D.L Hart
AU - Y Yonezawa
AB - We have fabricated and measured 5 GHz microstrip resonators from a series of YBa2Cu3O7-δ thin films grown on LaAlO3(001) substrates by in situ laser ablation. We have studied the correlations between unloaded quality factor and various film properties, such as transition temperature, width of transition, critical current density, narrowness of x-ray rocking curve, sharpness of electron channeling pattern, and most important substrate temperature during growth. We found that in general, higher transition temperature, higher critical current density, sharper transition, sharper channeling pattern, and narrower x-ray rocking curve correlate positively with good microwave performance. The best quality factor exists for a narrow growth temperature window (around 800°C). We also report the dependence of quality factor on device power for each film.
BT - Applied Physics Letters
DO - 10.1063/1.105092
LA - eng
M1 - 16
N1 - cited By 38
N2 - We have fabricated and measured 5 GHz microstrip resonators from a series of YBa2Cu3O7-δ thin films grown on LaAlO3(001) substrates by in situ laser ablation. We have studied the correlations between unloaded quality factor and various film properties, such as transition temperature, width of transition, critical current density, narrowness of x-ray rocking curve, sharpness of electron channeling pattern, and most important substrate temperature during growth. We found that in general, higher transition temperature, higher critical current density, sharper transition, sharper channeling pattern, and narrower x-ray rocking curve correlate positively with good microwave performance. The best quality factor exists for a narrow growth temperature window (around 800°C). We also report the dependence of quality factor on device power for each film.
PY - 1991
SP - 1789
EP - 1791
T2 - Applied Physics Letters
TI - Clear correlations observed between YBa2Cu3O 7-δ thin-film properties and GHz microwave resonator performance
VL - 58
SN - 00036951
ER -