Graduate Thesis Or Dissertation
 

Co-doped Barium Titanate Materials with High Dielectric Constants for Next Generation MLCC Dielectrics

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/mp48sn00d

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  • New high-K dielectric materials are critically needed as chip real-estate becomes more and more of a premium in modern electronics designs. One of the most common devices used in electronics are multilayer ceramic capacitors (MLCCs) which are subject to severe volumetric constraints. One effective means to decrease the size of capacitors without sacrificing performance is to design new materials with higher dielectric constants. This paper provides a detailed review of doping strategies for developing high dielectric constant BaTiO3 based capacitor dielectrics for the next generation of electronics. The work is focused on developing dielectric materials that utilize the relaxor ferroelectric mechanism for achieving high dielectric constants. This work includes a detailed analysis of the fabrication and characterization of two of the best performing compositions, co-doping with Nd/Ce and La/Ce. These dielectrics exhibited dielectric constants greater than 10,000 along with dielectric losses below 0.02. Finally, the impact of sintering temperatures on these materials was analyzed. The results of this thesis will help guide future work in the development of new high-K relaxor dielectrics for MLCC applications.
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  • Intellectual Property (patent, etc.)
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  • 2022-04-08 to 2024-05-09

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