CÁC BÀI BÁO KHOA HỌC 14:11:56 Ngày 22/10/2020 GMT+7
Magnetic and electrical properties of the Ho(Co, Si)2 compounds

The magnetization, a.c. susceptibility, resistivity and magnetoresistance have been measured for the invariable-unit-cell-parameter Ho(Co1-xSix)2 compounds. The Si substitution for Co in HoCo2 yields a dramatic initial increase of TC, whereas the 3d magnetic moment is reduced. These findings may be attributed to the strong involvement of Si p states in the hierarchy of exchange interactions. The magnetic phase transition at TC is of first order for the compounds with x < 0.075. For these compounds, the coexistence of metamagnetism and the quenching of spin fluctuations at T > TC are provided.

 Duc N.H., Oanh T.K.
    Gửi cho bạn bè
  Từ khóa : Electric conductivity measurement; Electric properties; Electrons; Magnetic moments; Magnetic permeability measurement; Magnetic properties; Magnetism; Magnetization; Magnetoresistance; Metamagnetism; Phase transitions; Temperature; Curie temperature; Exchange interactions; Spin fluctuations; Holmium compounds