The magnetic phase diagram in a single crystal of copper metaborate CuB2O4 in a magnetic field parallel to a tetragonal axis c has been investigated. From the resonant, magnetic and magnetostrictive data the phase diagram of CuB2O4 on a plane “temperature magnetic field” is constructed. The magnetic incommensuratecommensurate phase transition is caused by the saturation of weak subsystem of cop...

Magnetoacoustic emission (MAE) is a phenomenon where acoustic noise is generated due to the motion of non-180 ° magnetic domain walls in a ferromagnet with non-zero magnetostrictive constants. MAE has been studied extensively for many years [1-5] and has even been applied as an NDE tool for characterizing the heat treatment of high-yield low carbon steels [6-8]. A complete theory which fully ac...