A new type of magnetic domain wall in nearly compensated Ga-substituted YIG

Abstract

A special type of 180° domain wall which we call a ``compensation wall'' is observed in (111)‐oriented wafers with the chemical composition Y₃Fe_5−tGa_tO₁₂, where t≈1.3. The compensation wall aligns along the sites of magnetic compensation (M_s=0) normal to the lateral gradient of t and is distinguished from a regular Bloch wall by essentially three properties: (i) The location of the wall remains unchanged under varying external magnetic fields; (ii) the wall thickness depends strongly on the applied magnetic field; and (iii) the wall moves with changing temperature.