Mössbauer spectroscopy of creep-annealed soft magnetic amorphous alloys

1989 ◽  
Vol 51 (1-4) ◽  
pp. 1051-1059 ◽  
Author(s):  
T. Zemčík ◽  
L. Kraus ◽  
K. Zavěta
1984 ◽  
Vol 37 (4) ◽  
pp. 429 ◽  
Author(s):  
SJ Campbell

A straightforward introduction to Mossbauer spectroscopy is presented along with a brief background to its discovery over 25 years ago. Several applications of Mossbauer spectroscopy in the study of condensed matter are described. The examples are based on recent investigations of the mixed magnetic AuFe system and amorphous alloys and show how Mossbauer spectroscopy can be used to obtain information on local atomic order, magnetic phases and texture. The diverse range of applications of Mossbauer spectroscopy is outlined, including a brief discussion of its use in topics of current interest in metal physics.


2016 ◽  
Author(s):  
Vít Procházka ◽  
Vlastimil Vrba ◽  
Pavla Šretrová ◽  
David Smrčka ◽  
Marcel Miglierini

Materials ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2229
Author(s):  
Katarzyna Filipecka ◽  
Piotr Pawlik ◽  
Andrzej Kozdraś ◽  
Waldemar Kaszuwara ◽  
Jarosław Ferenc ◽  
...  

The aim of the present work was to investigate an influence of W addition on the phase constitution, microstructure and magnetic properties of the Pr9Fe65WxB26-x (where: x = 2, 4, 6, 8) alloy ribbons. Ribbons were obtained using the melt-spinning technique under low pressure of Ar. The as-cast samples were fully amorphous and revealed soft magnetic properties. These facts were confirmed by X-ray diffractometry, Mössbauer spectroscopy and magnetic measurements. Differential scanning calorimetry and differential thermal analysis allowed us to determine the thermal stability parameters of the amorphous phase. The Kissinger plots were constructed in order to calculate the activation energies for crystallization. Heat treatment carried out at various temperatures caused changes in the phase constitution and magnetic properties of the alloys. The phase analysis has shown the presence of the hard magnetic Pr2Fe14B and paramagnetic Pr1+xFe4B4 phases. Additionally, for the x = 2 and x = 6 alloys, a crystallization of soft magnetic Fe2B and α-Fe phases was observed. The Mössbauer spectroscopy allowed us to determine the volume fractions of constituent phases formed during annealing. The microstructure of annealed ribbons was observed using transmission electron microscopy.


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