Phase equilibria in Ho-Fe-Sn ternary system at 670 K


  • L. Romaka Ivan Franko L’viv National University
  • Yu. Stadnyk Ivan Franko L’viv National University
  • V. V. Romaka Lviv Polytechnic National University; Institute for Solid State Research
  • A. Horpenyuk Lviv Polytechnic National University



Intermetallics, Stannides, Phase diagrams, Crystal structure, X-ray diffraction


Interaction between the components in the Ho-Fe-Sn ternary system was studied using X-ray diffractometry, metallography and electron microprobe analysis. Isothermal section of the phase diagram was constructed at 670 K over the whole concentration range. Component interaction in the Ho-Fe-Sn system at 670 K results in the existence of one ternary compound HoFe6Sn6 which crystallizes in the YCo6Ge6 structure type (space group P6/mmm, a=0.53797(2),   c= 0.44446(2) nm). The interstitial-type solid solution HoFexSn2 (up to 8 at.% Fe) based on the HoSn2 (ZrSi2-type structure) binary compound was found. Solubility of Sn in the HoFe2 binary (MgCu2 structure type) extends up to 5 at. %.


F. Weitzer, A. Leithe-Jasper, P. Rogl, K. Hiebl, H. Noel, G. Wiesinger, W. Steiner, Solid State Chem. 104, 368 (1993) (

J. Stepien-Damm, E. Galdeska, O.I. Bodak, B.D. Belan, J. Alloys Compd. 298, 26 (2000) (

X.-L. Rao, J.M.D. Coey, J. Appl. Phys. 81, 5181 (1997) (

J. M. Cadogan, D. H. Ryan, J. Alloys Compd. 326, 166 (2001) (

Ya. Mudryk, L. Romaka, Yu. Stadnyk, O. Bodak, D. Fruchart, J. Alloys Compd. 383, 162 (2004) (

J. Stepien-Damm, O.I. Bodak, B.D. Belan, E. Galdeska, J. Alloys Compd. 298, 169 (2000) (

P. Salamakha, P. Demchenko, O. Sologub, O. Bodak, J. Stepien-Damm, Polish J. Chem. 71, 305 (1997).

L.C.J. Pereira, D.P. Rojas, J.C. Waerenborgh, J. Alloys Compd. 396, 108 (2005) (

L. Romaka, V.V. Romaka, P. Demchenko, R. Serkiz, J. Alloys Compd. 507, 67 (2010) (

R.V. Skolozdra, in: K.A. Gschneidner, Jr. and L. Eyring (Eds.), Handbook on the Physics and Chemistry of Rare Earths, Vol. 24, 1997, 399 p.

B. Chafik, E. Idrissi, G. Venturini, B. Malaman, Mater. Res. Bull. 26, 1331 (1991) (

O.Y. Oleksyn, H. Böhm, Z. Kristallogr. 213, 270 (1998) (

I. Shcherba, L. Romaka, A. Skoblik, B. Kuzel, H. Noga, L. Bekenov, Yu. Stadnyk, P. Demchenko, A. Horyn, Acta Phys. Pol. A 136, 158 (2019) (https://10.12693/APhysPolA.136.158).

A. Palenzona, P. Manfrinetti, J. Alloys Compd. 201, 43 (1993) (

L. Akselrud, Yu. Grin, WinCSD: software package for crystallographic calculations (Version 4), J. Appl. Crystallogr. 47, 803 (2014) (

T. Roisnel, J. Rodriguez-Carvajal, Mater. Sci. Forum, Proc. EPDIC7, 378-381, 118 (2001) (

T.B. Massalski, in: Binary Alloy Phase Diagr., ASM, Metals Park, Ohio (1990).

P. Villars, L.D. Calvert, in: Pearson’s Handbook of Crystallographic Data for Intermetallic Phases, ASM, Metals Park, OH (1991).

M.V. Bulanova, V.N. Eremenko, V.M. Petjukh, V.R. Sidorko, J. Phase Equil. 19, 136 (1998) (

K. Meier, L. Vasylechko, R. Cardoso-Gil, U. Burkardt, W. Schnelle, M. Schmidt, Yu. Grin, U. Schwarz, Z. Anorgan. Allg. Chem. 636(9-10), 1695 (2010).

G.J. Roe, T.J. O’Keefe, Metallurg. Transact. 1 (1970) 2565-2568.

L. Romaka, I. Romaniv, V.V. Romaka, M. Konyk, A. Horyn, Yu. Stadnyk, Phys. chem. solid state 19(2), 139 (2018) (

H. Noel, A.P. Goncalves, Intermetallics 9, 473 (2001) (

G. Venturini, M. Francois, B. Malaman, B. Roques, J. Less-Common Met. 160, 215 (1990) (

M. Francois, G. Venturini, B. Malaman, B. Roques, J. less-Common Met. 160, 197 (1990) (

O.E. Koretskaya, R.V. Skolozdra, Inorg. Mater. 22, 690 (1986).

G. Venturini, H. Ihou-Mouko, C. Lefevre, S. Lidin, B. Malaman, T. Mazet, J. Tobola, A. Verniere, Chem. Met. Alloys. 1, 24 (2008).



How to Cite

Romaka, L., Stadnyk, Y., Romaka, V. V., & Horpenyuk, A. (2020). Phase equilibria in Ho-Fe-Sn ternary system at 670 K. Physics and Chemistry of Solid State, 21(2), 272–278.



Scientific articles