Domain walls structure as studied by EPR

The paper suggests the electron paramagnetic resonance (EPR) of admixture ions as a new method for studying domain walls. It is shown that the above method may be applied to crystals in which a dense domain structure exists. The effects of the domain structure on the EPR signals are reported for the crystals KSc(MoO4)(2) , Pb-3 (PO4)(2) , in which a ferroelastic domain structure exists, and in MgSiF6 . 6H(2)O where an antiphase domain structure occurs.