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Tungsten Bronze‐Structured Temperature‐Stable Dielectrics

2007; Wiley; Volume: 90; Issue: 3 Linguagem: Inglês

10.1111/j.1551-2916.2007.01487.x

1551-2916

Martin C. Stennett, Ian M. Reaney, Gabrielle C. Miles, Anthony R. West, Caroline Kirk,

Semiconductor materials and devices

Dielectrics with exceptional temperature stability suitable for multilayer capacitor applications have been fabricated based on compositions in the tungsten bronze‐structured BaO–M 2 O 3 –TiO 2 –Nb 2 O 5 (BMTN, M=La 3+ , Nd 3+ , Sm 3+ ) system. Heterogeneous mixtures of BLTN, BNTN, and BSTN end members groups have been used to manufacture a ceramic capacitor stable to −15% of the room temperature capacitance (ɛ r >300) between −50° and + 200°C, with a room temperature dielectric loss of <0.02 at 1 MHz.