Ceramic structure

A ceramic structure, comprising

• a first layer containing a first crystal particle, and
• a second layer positioned on the first layer, the second layer containing a second crystal particle,
• the first crystal particle and the second crystal particle each comprising:
• at least one metal element selected from the group consisting of Al, Si, Ti, Cr, Zr, and Y;
• and
• at least one non-metallic element selected from the group consisting of N, C, and B,
• the first crystal particle and the second crystal particle being identical compounds,
• wherein, when a half-width of a peak of a Miller index of a maximum intensity of the first crystal particle in an X-ray diffraction of the first layer is defined as W1, and a half-width of a peak, the peak being the same as that of the Miller index of the second crystal particle, in an X-ray diffraction of the second layer is defined as W2,
• 9×W1>W2>W1 is satisfied.