Microwave dielectric properties of single-crystal quantum paraelectrics KTaO3 and SrTiO3 at cryogenic temperatures

Authors :: Geyer, Richard G.
Riddle, Bill
Krupka, Jerzy
Boatner, Lynn A.
Source :: Journal of Applied Physics. May 15, 2005, Vol. 97 Issue 10, 104111-1-104111-6
Publication Year :: 2005
Abstract: Microwave dielectric properties of single-crystal incipient quantum ferroelectrics, KTaO3 and SrTiO3 are measured at cryogenic temperatures. Dielectric tangent values of KTaO3 at 3 GHz were found to be 4.2 x 10(super -5) at 5.4 K, 8.9 x 10(super -5) at 77 K, and 1.4 x 10(super -4) at 300 K whereas those of SrTiO3 were 3.4 x10(super -3) at 5.4 K, 2.4 x 10(super -4) at 77 K, and 3.8 x 10(super -4) at 300 K.

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