Dielectric composition, electronic device, and multilayer electronic device

A dielectric composition comprising:

• a main-phase particle including a main component having a perovskite crystal structure represented by a general formula of ABO3;
• and
• segregation particles,
• wherein
• the dielectric composition includes RA, RB, M, and Si,
• A is at least one selected from Ba, Sr, and Ca,
• B is at least one selected from Ti, Zr, and Hf,
• RA is at least one selected from Eu, Gd, Tb, and Dy,
• RB is at least one selected from Y, Ho, and Yb,
• M is at least one selected from Mg, Mn, C, and Cr,
• the main component occupies 80-100 parts by mass with respect to 100 parts by mass of the main-phase particle,
• a total of RA content CRA to the main component is 0.60 mol % or more and 2.40 mol % or less in terms of RA2O3,
• a total of RB content CRB to the main component is 0.30 mol % or more and 1.20 mol % or less in terms of RB2O3,
• a total of M content to the main component is 0.40 mol % or more and 0.80 mol % or less in terms of MO,
• a Si content to the main component is 0.60 mol % or more and 1.80 mol % or less in terms of SiO2,
• 0.50<(α/β)/(CRA/CRB)≤1.00 is satisfied, where α is an average RA content (mol %) and β is an average RB content (mol %) of specific segregation particles including RA, RB, Si, Ba, and Ti in the segregation particle, and
• a total of content of RA and RB is 3.0 mol % or more,
• a Si content is 1.0 mol % or more,
• a Ba content is larger than a Ti content,
• a content of RA, RB, Si, Ba, and Ti to a total content of elements other than O is 80 mol % or more.

A dielectric composition comprising:

• a main-phase particle including a main component having a perovskite crystal structure represented by a general formula of ABO3;
• and
• segregation particles,
• wherein
• the dielectric composition includes RA, RB, M, and Si,
• A is at least one selected from Ba, Sr, and Ca,
• B is at least one selected from Ti, Zr, and Hf,
• RA is at least one selected from Eu, Gd, Tb, and Dy,
• RB is at least one selected from Y, Ho, and Yb,
• M is at least one selected from Mg, Mn, C, and Cr,
• the main component occupies 80-100 parts by mass with respect to 100 parts by mass of the main-phase particle,
• a total of RA content CRA to the main component is 0.60 mol % or more and 2.40 mol % or less in terms of RA2O3,
• a total of RB content CRB to the main component is 0.30 mol % or more and 1.20 mol % or less in terms of RB2O3,
• a total of M content to the main component is 0.20 mol % or more and 1.00 mol % or less in terms of MO,
• a Si content to the main component is 1.20 mol % or more and 1.80 mol % or less in terms of SiO2,
• 0.50<(α/β)/(CRA/CRB)≤1.00 is satisfied, where α is an average RA content (mol %) and β is an average RB content (mol %) of specific segregation particles including RA, RB, Si, Ba, and Ti in the segregation particle, and
• a total of content of RA and RB is 3.0 mol % or more,
• a Si content is 1.0 mol % or more,
• a Ba content is larger than a Ti content,
• a content of RA, RB, Si, Ba, and Ti to a total content of elements other than O is 80 mol % or more.