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Abstract #2623

Evaluation of Ferroelectric Resonators as RF Coils for Magnetic Resonance Spectroscopy

Geifman I, Golovina I
Oakton Community College

The most important problems of any kind of magnetic resonance methods (NMR, EPR or MRI) are their sensitivity or imaging quality. Major new advances in sensitivity and quality of image can be provided by the development of new types of RF coils, especially ferroelectric resonators (FRs), which are the subclass of dielectric resonators. Potassium tantalite (KTaO3) as the best material for microwave/RF resonators for magnetic resonance spectroscopy is proposed. FRs made of KTaO3 are successfully tested in NMR and EPR experiments providing 10- and 100-fold enhancement in their sensitivity, respectively. For those applications, the advantage of the designed FRs made of single-crystal potassium tantalate is that it exhibits no background signals. Another advantage of this material is that in the RF range it has very small frequency dependence of the dielectric constant. We developed FRs without discrete network elements to substitute commonly used birdcage resonators in NMR and MRI. This study demonstrated the adv