Skip to main content Accessibility help

Electron Diffraction of ThMn12/Th2Zn17-Type Structures in the Nd-Fe-Ti System

  • Daniela Nunes (a1), António P. Gonçalves (a2) and Patricia A. Carvalho (a1)


Nd:11Fe:Ti alloys prepared by arc melting followed by splat quenching and annealing have been investigated by electron microscopy. The as-cast microstructure evidenced an α-Fe(Ti) → NdFe11Ti → Nd2(Fe,Ti)17 solidification sequence compatible with a cascade of peritectic reactions. The Nd2(Fe,Ti)17 phase was not detected in the microstructure of the splat-quenched materials, but after annealing the ternary compound grains consisted of a mixture of ThMn12-type and Th2Zn17-type structures exhibiting a consistent (020)1:12//(003)2:17 and [100]1:12//[110]2:17, orientation relation, with the invariant plane sitting at (022)1:12//(333)2:17. A series of 3D microdiffraction experiments carried out on grains presenting a random distribution of planar defects has been used to map the reciprocal space of the intergrown phases.


Corresponding author

* Corresponding author. E-mail:


Hide All
Amirabadizadeh, A., Tajabor, N., Alinejad, M.R., Salamati, H. & Pourarian, F. (2004). Magnetostrictive strain effects in NdFe11Ti. Phys Stat Sol (a) 201, 121124.
Chin, T.S., Chang, W.C., Ku, H.C., Weng, C.C., Lee, H.T. & Hung, M.P. (1989). Structure and magnetic properties of the ThMn12 type NdFeM alloys (M=Si/Al/B/transition metals). IEEE Trans Magn 25, 33003302.
Hu, B.P., Li, H.S., Gavigan, J.P. & Coey, J.M.D. (1989). Intrinsic magnetic properties of the iron-rich ThMn12-structure alloys R(Fe11Ti); R=Y, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm and Lu. J Phys C: Condens Matter 1, 755770.
Jang, T.S. & Stadelmaier, H.H. (1990). Phase equilibria and magnetic properties of iron rich FeNdTi and FeSmTi alloys. J Appl Phys 67, 49574959.
Jian, M.R., Chin, T.S., Tsai, J.L., Zhang, H.W. & Shen, B.G. (2000). Structure and magnetic properties of textured Nd(Fe,Ti)12Nxfilms. J Magn Magn Mater 209, 205207.
Kilaas, R. (1987). Interactive simulation of high resolution electron micrographs. In Proceedings of 45th Annual EMSA Meeting, Bailey, G.W. (Ed.), pp. 6667. San Francisco, CA: San Francisco Press.
Kong, L.S., Shen, B., Wang, F., Cao, L., Guo, H. & Ning, T. (1994). High-coercivity Sm-Fe-Ga-C compounds with Th2Zn17 structure by melt spinning. J Appl Phys 75, 62506252.
Li, H.S. & Coey, J.M.D. (1991). Magnetic properties of ternary rare-earth transition-metal compounds. In Handbook of Magnetic Materials, Buschow, K.H.J. (Ed.), vol. 6, pp. 184. Amsterdam: North-Holland.
Liao, L.X., Altounian, Z. & Ryan, D.H. (1993). Cobalt site preferences in iron rare-earth-based compounds. Phys Rev B 47, 1123011241.
Nunes, D., Colaço, R., de Hosson, J.T.M., Gonçalves, A.P., Pereira, L.C.J. & Carvalho, P.A. (2009a). Magnetic microstructure of YFe11Ti aggregates. J Alloys Compd 487, 1117.
Nunes, D., Gonçalves, A.P., Pereira, L.C.J., Colaço, R. & Carvalho, P.A. (2009b). Magnetic domain morphologies and wall energy in YFe11Ti crystals. Mater Charact 60, 16071612.
Nunes, D., Gonçalves, A.P., Pereira, L.C.J., Colaço, R. & Carvalho, P.A. (2011). Microstructures and magnetic domain configurations of NdFe11Ti and Nd2(Fe,Ti)17 aggregates. Appl Phys A 104, 10531060.
Suski, W. (1996). The ThMn12-type compounds of rare earths and actinides: Structure, magnetic and related properties. In Handbook on the Physics and Chemistry of Rare Earths, Gschneidner, K.A. Jr. & Eyring, L. (Eds.), vol. 22, pp. 143294. Amsterdam: North-Holland.
Villars, D. & Calvert, L.D. (1991). Pearson's Handbook of Crystallographic Data for Intermetallic Phases, 2nd ed., vol. 2. ASM International.
Yu, M.H., Zhang, Z.D., Xiao, Q.F., Geng, D.Y., Liu, W. & Zhao, X.G. (2000). Crystallographic transformations of rapidly quenched Nd10Fe90−x Ti x . J Appl Phys 88, 42264231.



Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed