By Topic

Dielectric properties of substrates for deposition of high-T c thin films up to 40 GHz

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Konopka, Janusz ; Inst. Fizyki PAN, Warszawa, Poland ; Wolff, I.

Dielectric properties of CaNdAlO4, LaAlO3, SrLaAlO4, SrLaGa3O7, and NdGaO3 monocrystals, prospective substrate materials for the deposition of thin films of high-temperature superconductors, were measured with high accuracy at frequencies up to 40 GHz in the temperature range 10 to 300 K. Most materials exhibit uniaxial anisotropy with ε'r ranging from 8.88 (SrLaGa3O7 along optical c-axis) to 24.18 (LaAlO3). A decrease of ε'r with temperature decrease was observed in all materials CaNdAlO4 (perpendicular to c-axis) where ε'r increases. Microwave losses in LaAlO3, SrLaAlO4 and SrLaGa3O7 decrease with temperature while CaNdAlO4 and NaGaO3 pronounced loss increase was found at temperatures below 100 K. The authors suggest that in the latter materials at lower temperatures, neodymium ions become magnetically ordered and are responsible for the observed effects

Published in:

Microwave Theory and Techniques, IEEE Transactions on  (Volume:40 ,  Issue: 12 )