Structure and magnetic properties of Mn1-xFexNiGe (0,05 ≤ x ≤ 0,60) solid solutions

  • 1 Laboratory of Phys. of Magnetic Materials – Scientific–Practical Materials Research Centre NASB, Minsk, Belarus


Intermetallic alloys and solid solutions having magnetostructural phase transitions are of interest for theory and practice due to the presence of magnetoresistance, magnetocaloric and magnetostriction effects. MnNiGe-based alloys and solid solutions are convenient model objects for studying static and dynamic distortions of the crystal lattice, since magnetostructural transformations of both the first and second kind realized in them. The features of the relationship of magnetic properties and changes in the crystalline structure of Mn1-xFexNiGe (0,05 ≤ x ≤ 0,60) solid solutions are studied. It has been established that MnNiGe is an antiferromagnet with a Néel temperature TN ≈ 346 K. Substitution of Mn ions with iron ones causing a decrease in the parameters of the MnNiGe unit cell leads to the emergence of a ferrimagnetic state and in some cases to a manifestation of ferromagnetic ordering of magnetic moments.



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