14
Low Loss Ferroelectric
Material Development for Accelerator Applications—Euclid TechLabs, LLC,
Dr. A. D. Kanareykin,
Dr. A. D. Kanareykin, Business
Official, alexkan@euclidconcepts.com
DOE Grant No. DE-FG02-04ER83946
Amount: $650,000
Low loss ferroelectric materials based on BST (barium
strontium titanate) could be used as the basis for new advanced technology
microwave and particle accelerator devices. The electronic properties of this material would
allow one the creation of an X-band, high-power RF switch with peak power
sufficient for use in linear collider RF systems. This project will develop a new BST
material with a permittivity of ~500 and a loss factor of 1×10-3 at
11.4 GHz. In addition, a process for
sintering and forming large size objects (required for phase shifter
components) made of BST ceramic will be demonstrated. In Phase I, a
nonlinear ferroelectric material, intended for accelerator applications, was
produced. The required tunability (De/e
of 22- 29 % at 4-5 4.5 V/mm dc bias field, for thin substrates) and dielectric
losses (5×10-3 at X-band) have
been achieved. Forming and sintering
technology was developed for large ferroelectric components. Phase II will improve the nonlinear
ferroelectric BST-MgO (BSM) composition and demonstrate it’s appropriateness
for linear accelerator applications. The
ferroelectric tunability of the new material will be increased (De/e up to
1.25-1.35 at 4.5-5.5 V/mm bias) and the loss factor will be reduced (to
3-4´10-3 at 10 GHz).
Commercial Applications and Other Benefits as described by the awardee: The ferroelectric-based tunable device technology should have application to a variety of high-frequency, large-signal devices in the military and wireless communication industries.