A multilayer ceramic capacitor includes a stacked body and external electrodes. The stacked body includes stacked dielectric layers and internal electrodes. The external electrodes are disposed on lateral surfaces of the stacked body and are connected to the internal electrodes. The dielectric layers include outer layer portions and an effective layer portion. Each outer layer portion is adjacent to a corresponding main surface of the stacked body. Each outer layer portion is a dielectric layer located between a corresponding main surface and an internal electrode closest to the main surface. A ratio of a dimension of the effective layer portion in a stacking direction to a dimension of the stacked body in the stacking direction is not less than about 53% and not more than about 83%.

A multilayer ceramic capacitor includes a first internal electrode, a second internal electrode, a first dielectric layer, and a second dielectric layer. The first internal electrode includes a first outer peripheral portion and a first inner electrode portion inside the first outer peripheral portion. The second internal electrode includes a second outer peripheral portion and a second inner electrode portion inside the second outer peripheral portion. The first dielectric layer includes a first high dielectric constant portion, and a first inner dielectric layer portion inside the first high dielectric constant portion. The second dielectric layer include a second high dielectric constant portion and a second inner dielectric layer portion inside the second high dielectric constant portion.

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.

A multilayer ceramic capacitor includes a multilayer body including dielectric layers, first and second internal electrode layers on the dielectric layers and respectively exposed at first and second end surfaces, and first and second external electrodes respectively located on first and second end surfaces of the multilayer body. The multilayer body includes an inner layer portion, and first and second main-surface-side outer layer portions each including a protective structure made of metal and not overlapping the inner layer portion when the multilayer ceramic capacitor is seen from above. The protective structure is not in contact with first and second end surfaces.

Ceramic raw material powder includes: a main phase having a perovskite structure, wherein elements acting as a donor and an acceptor are solid-solved in B sites of the perovskite structure, wherein a first relationship of value A<value B is satisfied in a center region of each grain of the ceramic raw material powder; a second relationship of value A>value B is satisfied in a circumference region of each grain of the ceramic raw material powder, and value A in the second relationship gradually decreases from the circumference region to the center, wherein value A is a value of (concentration of the element acting as a donor)×(valence of the element acting as a donor−4), and value B is a value of (concentration of the element acting as an acceptor)×(4−valence of the element acting as an acceptor).

LTCC devices are produced from dielectric compositions Include a mixture of precursor materials that, upon firing, forms a dielectric material having a zinc-lithium-titanium oxide or silicon-strontium-copper oxide host.

(Object) An object is to suppress the peeling and lamination misalignment of ceramic green sheets without deteriorating the sheet strength.

(Solution) A ceramic green sheet lamination aid comprising a compound represented by formula (1).

Z—[O-(AO)n-H]x  (1) (Z represents a residual group of a compound having a number of carbons group of 1 to 22 and having hydroxyl groups of 1 to 6 in which all of said hydroxyl groups are removed; x represents a number of 1 to 6; AO represents an oxyalkylene group having a number of carbons of 2 to 4; n represents a number of 5 to 500; x×n is in a range of 5 to 500; and a weight ratio of oxyethylene group EO contained in the oxyalkylene group AO having the number of carbons of 2 to 4 is 0 to 80 weight %.)

A multilayer ceramic capacitor includes a stacked body and external electrodes. The stacked body includes stacked dielectric layers and internal electrodes. The external electrodes are disposed on lateral surfaces of the stacked body and are connected to the internal electrodes. A ratio of min to max is not less than about 36% and not more than about 90%, where A.sub.1, A.sub.2, A.sub.3, and A.sub.4 respectively denote the surface areas of first, second, third, and fourth external electrodes that are located on the first or second main surface of the stacked body.

A multi-layer ceramic capacitor includes a first region, a second region, a multi-layer unit, and a side margin. In the first region, crystal grains including intragranular pores are dispersed. In the second region, crystal grains including intragranular pores are not dispersed. The multi-layer unit includes ceramic layers that are laminated in a first direction and include the second region, and internal electrodes disposed between the ceramic layers. The side margin covers the multi-layer unit from a second direction orthogonal to the first direction and includes a region, the region being adjacent to the multi-layer unit and including the first region.

A multilayer ceramic capacitor includes a stacked body and external electrodes. The stacked body includes stacked dielectric layers and internal electrodes. The external electrodes are disposed on lateral surfaces of the stacked body and are connected to the internal electrodes. A ratio of min to max is not less than about 36% and not more than about 90%, where A.sub.1, A.sub.2, A.sub.3, and A.sub.4 respectively denote the surface areas of first, second, third, and fourth external electrodes that are located on the first or second main surface of the stacked body.