Dielectric material, multilayer ceramic electronic device, and manufacturing method of multilayer ceramic electronic device
AssigneeTaiyo Yuden Co., Ltd.
InventorsKana TAMURA, Koichiro MORITA
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Abstract
A dielectric material includes a base material containing barium zirconate titanate as a main component, containing zirconium in an amount of 4 at % or more and 30 at % or less with respect to titanium and zirconium, and having an atomic concentration ratio of barium to titanium and zirconium of 1 or more and 1. 1 or less, and a subcomponent containing 2 at % or more and 4 at % or less of europium with respect to titanium of the barium zirconate titanate.
Claims15
A dielectric material comprising:
- a base material containing barium zirconate titanate as a main component, containing zirconium in an amount of 4 at % or more and 30 at % or less with respect to titanium and zirconium, and having an atomic concentration ratio of barium to titanium and zirconium of 1 or more and 1. 1 or less;
- and
- a subcomponent containing 2 at % or more and 4 at % or less of europium with respect to titanium of the barium zirconate titanate.
A multilayer ceramic electronic device comprising:
- a plurality of dielectric layers, each of which contains a base material containing barium zirconate titanate as a main component, containing zirconium in an amount of 4 at % or more and 30 at % or less with respect to titanium and zirconium, and having an atomic concentration ratio of barium to titanium and zirconium of 1 or more and 1. 1 or less, and a subcomponent which contains 2 at % or more and 4 at % or less of europium with respect to the titanium of the barium zirconate titanate;
- a plurality of internal electrode layers each of which is sandwiched by each two of the plurality of dielectric layers;
- and
- external electrodes that are provided on side faces of the plurality of dielectric layers and the plurality of internal electrode layers, and are electrically connected to the plurality of internal electrode layers.
A manufacturing method of a multilayer ceramic electronic device comprising:
- forming a ceramic green sheet by mixing a base material containing barium zirconate titanate as a main component, containing zirconium in an amount of 4 at % or more and 30 at % or less with respect to titanium and zirconium, and having an atomic concentration ratio of barium to titanium and zirconium of 1 or more and 1. 1 or less, and a subcomponent which contains 2 at % or more and 4 at % or less of europium with respect to the titanium of the barium zirconate titanate;
- forming an internal electrode pattern on the ceramic green sheet;
- forming a stack by stacking a plurality of stack units each of which has a structure in which the internal electrode pattern is formed on the ceramic green sheet;
- and
- firing the stack so that a plurality of dielectric layers and a plurality of internal electrodes.
Dependencies are inferred from the claim text.