Compound is a zonal metamagnet. It was found that
partial substitution of cobalt for aluminum in leads to a decrease in the matamagnetic transition field and the
emergence of weak zonal ferromagnetism in the system at . This can significantly modify the character of the effect
of rare-earth impurities on the –subsystem. To exclude the
effect of the crystalline field, gadolinium was used as a magnetizing
element. Hence the magnetic properties of the system were studied in this work. We confined
ourselves to the aluminum concentration range () in the
limits of which initial compounds are paramagnets and undergo a metamagnetic
transition in the field. It is shown that, with an increase in the
concentration of (with constant concentration of ), the transition from
paramagnetism to ferromagnetism takes place. When the content of increases, the area of ferromagnetism
expands, and the paramagnetic state area shrinks. The behavior of the compounds
under study in the field depends on the ratio between the degrees of
magnetization of cobalt and gadolinium subsystems. If in a weak field is greater than
, gadolinium impurities shift
the metamagnetic transition field towards weak fields, as the molecular field
acting on cobalt from the gadolinium subsystem is summed with the external
magnetic field . In case in a weak field is smaller than , and are directed antiparallel to each other.
Subjects | Engineering |
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Journal Section | Physics |
Authors | |
Publication Date | October 27, 2017 |
Published in Issue | Year 2017 Volume: 12 Issue: 4 |