Green and blue magneto-optical photonic crystals

► (Bi,Ca)3Fe5O12, Bi3(Fe,Ga)5O12, and (Y,Ce)3Fe5O12 garnets in photonic crystals. ► Green and blue light graded magneto-optical photonic crystals. ► Bi3Fe5O12 garnet shows superior green light Faraday rotation. ► (Y,Ce)3Fe5O12 garnet is a principal material for blue light magneto-optics.