Glassy state formation and magnetic properties of Co-rich ternary RE–Co–B (RE=Y, Tb, Ho) amorphous alloys

Critical Behavior near the Ferromagnetic to Paramagnetic Phase Transition in Y8Co62B30 Amorphous Alloy

“…Fully amorphous structure has been confirmed in our previous paper basing on X-ray diffraction measurements [2]. Scaling hypothesis was used for calculations utilizing M (H) curves as the input data.…”

“…The Y-Co-B alloys are typical collinear ferromagnets as shown before [2]. Investigations on the RE 8 Co 62 B 30 amorphous alloys (RE = Tb, Ho or Y) have shown the influence of heavy rare earth substitution on the changes of magnetic and magnetocaloric properties [2], but determination of the character of phase transformation at around the Curie temperature T C is another important aspect [5]. Type of the transition is believed to be of the second order [2].…”

“…Boron plays significant role as it obstructs the crystallization process and Co-B or RE-Co-B (RE = rare earth element) amorphous alloys can be obtained in wide composition range [2,3]. Further development of the rare earth-transition metal multicomponent amorphous alloys is important for understanding of their magnetic behavior and from the point of view of possible applications, for instance magnetic refrigeration [4].…”

“…Investigations on the RE 8 Co 62 B 30 amorphous alloys (RE = Tb, Ho or Y) have shown the influence of heavy rare earth substitution on the changes of magnetic and magnetocaloric properties [2], but determination of the character of phase transformation at around the Curie temperature T C is another important aspect [5]. Type of the transition is believed to be of the second order [2]. In this study we investigate the critical phenomena in Y 8 Co 62 B 30 (the representative with non-magnetic rare earth component) basing on different approaches including the Arrott plot, the Kouvel-Fisher method and the critical isotherm analysis.…”

Influence of Al and Ga on Formation of the La(Fe,Si)13-Type Phase in the LaFe11.14Co0.66Si1.2-xMx(where x=0.1, 0.2, 0.3; M=Al, Ga) Alloys

“…Parallel to Gd 5 Ge 2 Si 2 alloy other MCMs were studied i.e. crystalline (MnAs [5], Ni-(Mn,Cu)-Ga [6]) and amorphous materials (Fe-based [7,8], Co-based [9] or Gd-based [10]). …”