An energy storage element and method of fabrication thereof are disclosed. An energy storage element includes a set of electrodes where one or more electrodes have extended conductive paths through nano-channel electric interconnections with ceramic particles in one or more dielectric layers. The electrode's electric field is extended into the dielectric material providing increased capacitance. The set of electrodes can include a pair of electrode layers respectively attached directly to opposing sides of one dielectric layer. The set of electrodes, which can also be referred to as multi-layer electrodes, can include a plurality of electrode layers interleaved between, and directly attached to, a plurality of stacked dielectric layers.

The present invention provides a dielectric composition having high relative permittivity and insulation resistance at high temperature. The dielectric composition includes a main component expressed by a compositional formula (Sr.sub.1-x, Ca.sub.x).sub.m(Ti.sub.1-yHf.sub.y)O.sub.3-δN.sub.δ, in which 0<x≤0.15, 0<y≤0.15, 0.90≤m≤1.15, and 0<δ≤0.05 are satisfied.

A ceramic electronic component includes a body including a dielectric layer and a plurality of internal electrodes stacked in a first direction with the dielectric layer interposed therebetween and including first and second surfaces opposing each other in the first direction and side surfaces connected to the first and second surfaces, an external electrode disposed on one of the side surfaces of the body extending onto a portion of the first surface of the body, and an insulating layer covering a surface of the external electrode and including a plurality of openings exposing the external electrode, wherein a ratio of an area of the plurality of openings to an area of the surface of the external electrode covered by the insulating layer is 20% to 70%.

A multilayer capacitor includes a capacitor body including dielectric layers and first and second internal electrodes, the capacitor body having first to sixth surfaces, the first internal electrode being exposed through the third, fifth, and sixth surfaces, and the second internal electrode being exposed through the fourth, fifth, and sixth surfaces, a first side portion and a second side portion, respectively disposed on the fifth surface and the sixth surface of the capacitor body, and a first external electrode and a second external electrode, respectively be connected to the first internal electrode and the second internal electrode. The first and second side portions comprise an acicular second phase including a glass comprising aluminum (Al) and silicon (Si), manganese (Mn), and phosphorus (P), and a volume of the second phase is 30% or more with respect to the entire first and second side portions.

A multi-layer ceramic electronic component includes a multi-layer unit and a side margin. The multi-layer unit includes a functional unit including internal electrodes laminated in a first direction, and a pair of covers that covers the functional unit from both sides in the first direction, the multi-layer unit satisfying a relationship of (2*t2)/t1≥0.6, where t1 represents a dimension of the functional unit in the first direction and t2 represents a dimension of each of the pair of covers in the first direction. The side margin covers the multi-layer unit in a second direction orthogonal to the first direction.

A multilayer ceramic capacitor includes: a multilayer structure in which each of dielectric layers and each of internal electrode layers are stacked, wherein a relationship of 8.0≥I.sub.A/I.sub.B>1.40 is satisfied in a TSDC (Thermally Stimulated Depolarization Currents) of temperature elevation rate of 10 degrees C./min under a condition of 130 degrees C., 5 V/μm and a polarization of 30 min, when a peak current value on a lower temperature side in a temperature range of 130 degrees C. to 190 degrees C. is I.sub.A and a peak current value on a higher temperature side in a temperature range of 190 degrees C. to 280 degrees C. is I.sub.B.

Provided are a dielectric material and a device including the dielectric material. The dielectric material includes (K.sub.0.5Na.sub.0.5)NbO.sub.3 and (K.sub.0.5A.sub.0.5)TiO.sub.3, wherein A is a trivalent element having 3 valence electrons, in a solid solution; and the device includes a plurality of electrodes; and at least one dielectric layer between the plurality of electrodes, wherein the dielectric layers include the dielectric material.

A method of producing a core-shell particle includes introducing a barium titanate-based base powder and an additive to a reactor, and exposing the barium titanate-based base powder and the additive to a thermal plasma torch to obtain core-shell particles including a core portion having barium titanate (BaTiO.sub.3) and a shell portion including the additive and formed on a surface of the core portion.

A multilayer device and a method for producing a multilayer device are disclosed. In an embodiment a multilayer device includes a main body having at least two external electrodes, at least one first internal electrode; at least one second internal electrode, wherein each internal electrode is electrically conductively connected to an external electrode, a plurality of ceramic layers, wherein the ceramic layers comprise the internal electrodes and at least one dielectric layer, wherein, viewed along a stack direction of the ceramic layers, the dielectric layer being arranged between the internal electrodes, and wherein the dielectric layer is printed onto at least one sub-region of one of the ceramic layers.

A thin film capacitor for which electrode conductivity is high and electrode irregularities are unlikely to be generate even if the capacitor if heated up to 700° C. This thin film capacitor has a first electrode, a dielectric layer, and a second electrode. The dielectric layer contains an ABO.sub.2N-type oxynitride. The nitrogen concentration of the part of the dielectric layer that contacts the first electrode is no more than half the nitrogen concentration of the center part of the dielectric layer.