Investigating the crystallization process in a FeCrB metallic glass by combining magnetic and neutron thermo-diffraction experiments

The structural evolution of a Fe70Cr10B20 metallic glass was followed by means of in situ high-temperature neutron thermo-diffraction and magnetization measurements. Above 723 K the crystallization of bcc-Fe together with a metastable (FeCr)3B phase with tetragonal crystal structure (space group 14̄) is observed. Further heating gives rise to the transformation of the (FeCr)3B phase into another tetragonal (FeCr)2B phase (space group 14 / mcm) + bcc- Fe. On cooling down to room temperature no additional structural transformations occurred. This two-step crystallization process allows understanding quantitatively the intricate variation of the magnetization at high-temperature

[1]  P. Gorria,et al.  Spin-glass-like behaviour in ball milled Fe30Cr70 alloy studied by ac magnetic susceptibility , 2011 .

[2]  C. Bolfarini,et al.  Out-of-plane magnetic patterning based on indentation-induced nanocrystallization of a metallic glass. , 2010, Small.

[3]  A. I. Figueroa,et al.  Direct measurements of the correlation between reentrant ferromagnetism and lattice expansion in FeCuZr alloys , 2010 .

[4]  P. Gorria,et al.  Crystallization of Fe75Zr25 metallic glass: a two‐step process involving metastable bcc‐Fe and polymorphic transformation , 2009 .

[5]  P. Gorria,et al.  Analysis of the diffraction-line broadening on nanostructured Fe: size–strain effects induced by milling and heating , 2008 .

[6]  P. Gorria,et al.  Kinetics of crystallization of FeB-based amorphous alloys studied by neutron thermo-diffractometry , 2007, 0801.0869.

[7]  V. Prida,et al.  Structural evolution and magnetic properties in Fe70Cr10B20 ribbons , 2005 .

[8]  G. Cacciamani,et al.  Driving forces for crystal nucleation in Fe–B liquid and amorphous alloys , 2003 .

[9]  J. Cadogan,et al.  Effect of Fe-exchange-field penetration on the residual amorphous phase in nanocrystalline Fe92Zr8 , 2000 .

[10]  Michael E. McHenry,et al.  Amorphous and nanocrystalline materials for applications as soft magnets , 1999 .

[11]  P. Švec,et al.  Formation of metastable phases from amorphous state , 1997 .

[12]  A. Manthiram,et al.  Synthesis and characterization of chains composed of nanometer size FeCrB particles , 1997 .

[13]  L. Battezzati,et al.  Undercooling of NiB and FeB alloys and their metastable phase diagrams , 1997 .

[14]  J. Barandiaran,et al.  Structural and magnetic changes in FeNbCuSiB amorphous alloys during the crystallization process , 1996 .

[15]  Hernando,et al.  Tensile stress dependence of the Curie temperature and hyperfine field in Fe-Zr-B-(Cu) amorphous alloys. , 1996, Physical review. B, Condensed matter.

[16]  Juan Rodríguez-Carvajal,et al.  Recent advances in magnetic structure determination by neutron powder diffraction , 1993 .

[17]  J. Barandiaran,et al.  Magnetic behavior of Fe‐Nb and Fe‐Zr alloys nanocrystallized by means of flash annealing , 1993 .

[18]  Westerholt,et al.  Critical behavior at the ferromagnetic phase transition of (Fe1-xCrx)85B15 metallic glasses close to the critical concentration of ferromagnetic long-range order. , 1990, Physical review. B, Condensed matter.

[19]  F. Luborsky.  Chapter 1 – Amorphous metallic alloys , 1983 .

[20]  T. Kaneko,et al.  Pressure effect on the Curie temperature and high‐field susceptibility of FeCrB amorphous Invar alloy , 1982 .

[21]  H. Güntherodt,et al.  Glassy Metals I , 1981 .