Phenomenom of The Magnetic Instabiliti in Some Magnets with Collectivized Electrons

Year 2020, Volume: 15 Issue: 1, 20 - 28, 18.01.2020

Zaur Gamishidze

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.

Keywords

Instability, Metamagnetizm, Magnetization, Exchange Interaction, Critical Field

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