Yapay Zeka Hızlı Bakış & Çıkarımlar
AI InsightIn case in a weak field is smaller than , and are directed antiparallel to each other.
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Özet
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.