Ceramic Material, Varistor and Methods of Preparing the Ceramic Material and the Varistor

A ceramic material comprising:

• ZnO as a main component;
• and
• additives selected from the group consisting of an Al3+-containing solution, a Ba2+-containing solution, and at least one compound containing a metal element,
• wherein the metal element is selected from the group consisting of Bi, Sb, Co, Mn, Ni, Y, and Cr.

A ceramic material comprising

• ZnO as a main component;
• and
• additives selected from the group consisting of an Al3+-containing solution, a Ba2+-containing solution, and at least one compound containing a metal element, wherein the metal element is selected from the group consisting of Bi, Sb, Co, Mn, Ni, Y, and Cr,
• wherein c1 is the equivalent content of Co in Co3O4, m is the equivalent content of Mn in Mn3O4, s is the equivalent content of Sb in Sb2O3, c2 is the equivalent content of Cr in Cr2O3, a is the content of Al3+, y is the equivalent content of Y in Y2O3, b1 is the equivalent content of Bi in Bi2O3, n is the equivalent content of Ni in NiO, b2 is the content of Ba2+, and z is the content of ZnO, and
• wherein
• 0.4 mol %≤b1≤0.55 mol %,
• 1.10 mol %≤s≤1.90 mol %,
• 0.50 mol %≤c1≤0.80 mol %,
• 0.20 mol %≤m≤0.30 mol %,
• 0.70 mol %≤n≤1.20 mol %,
• 0.25 mol %≤y≤0.45 mol %,
• 0.00 mol %≤c2≤0.10 mol %,
• 0.003 mol %≤a≤0.006 mol %, and
• 0.005 mol %≤b2≤0.015 mol %.