PHENOMENOM OF THE MAGNETIC INSTABILITI IN SOME MAGNETS WITH COLLECTIVIZED ELECTRONS

Abstract

An effective method of studying the properties of zonal magnets is to affect the magnet by the - exchange field. The investigation of the impact of an - exchange field on the behavior of zonal metamagnetic was the objectives of this work. Gadolinium was used as a magnetizing element to exclude the effect of a crystal field. Therefore, in this work, the magnetic properties of the system were studied. The measurement results showed that, as is substituted for , the field decreases monotonically. The magnetization of the -subsystem exceeds that of the -subsystem , then the magnetic moment of the -subsystem is oriented parallel to the external field, while the moment of the -subsystem is antiparallel to the latter, here the exchange interaction leads to a decrease in the metamagnetic transition field. The exchange field helps the external field with magnetization. When , the magnetization of the -subsystem is oriented along the field. The external field does not magnetize the -subsystem, but demagnetizes it, and then to be magnetized parallel to this field. When these compounds become magnetically ordered, the magnetization degrees of - и -subsystems equalize in the concentration zone. The dependence of the magnetic moment of the compositions of the -subsystem on the content of gadoliniums increases linearly with the increasing content of gadolinium, which is due to the increasing effective field affecting the -subsystem. The data for the systems with different content of aluminum within an error are on the line.