Enhanced Microwave Commutation Quality Factor of Tunable Capacitors Based on SrTiO 3 Thin Films.

Λεπτομέρειες βιβλιογραφικής εγγραφής
Τίτλος:	Enhanced Microwave Commutation Quality Factor of Tunable Capacitors Based on SrTiO 3 Thin Films.
Συγγραφείς:	Tumarkin, Andrei, Bogdan, Alexey, Sapego, Eugeny, Korepanov, Oleg, Karamov, Artem
Πηγή:	Molecules; Dec2025, Vol. 30 Issue 23, p4593, 13p
Θεματικοί όροι:	Quality factor, Strontium titanate, Thin films, Ferroelectric crystals, Dielectric relaxation, Microwaves, Capacitors, Magnetron sputtering
Περίληψη:	Thin films of strontium titanate were grown on a polycrystalline aluminum oxide substrate using magnetron sputtering. These films exhibit high structural quality and nonlinear properties, which make them promising for microwave applications. Planar capacitors based on SrTiO3 films demonstrated a tunability of 1.65 with a microwave Q-factor of at least 110 in the entire range of control voltages without deterioration of losses, and a slow capacitance relaxation level no more than 4%, which is significantly better than currently published data for planar ferroelectric elements. This is the first successful attempt to create a planar SrTiO3 capacitor on an alumina, which demonstrates a commutation quality factor CQF of 3300 at microwaves. [ABSTRACT FROM AUTHOR]
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Βάση Δεδομένων:	Complementary Index

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