Iron boride structure

Fig. 1.12 The iron boride structure type. From Wells (1986).

Cementite, FeaC, has an interesting structure, involving both octahedral and trigonal-prismatic arrangements of six iron atoms about a carbon atom (Slrukiurbericht, II, 33). The iron boride FeB (Struktur-bericht, III, p. 12) contains trigonal prisms of iron atoms about the boron atoms, the Fe—B distance being about 2.15 A, which is approxi-... 

The ferromagnetic iron borides are often referred to as interstitial compounds because the boron atoms occupy interstices in an otherwise close-packed iron lattice. The internal fields at room temperature of Fe2B and FeB are 242 and 118 kG respectively compared with a value of 330 kG for iron itself [79, 80]. Data available concerning the detailed band structure of these compounds are consistent with 3i/-populations on the iron atoms of and... 

Tra] Traore, K., Kappler, J.P., Study ofthe Variation of die Crystalline Parameters of Solid Solutions of Manganese, Cobalt, Nickel and Iron Borides, as a Function of their Composition (in French), Bull. Soc. Chim. Fr, (9-10), 419—425 (1979) (Crys. Structure, Experimental, 16)... 

Suw] Suwas, S., Bhargava, S., Sangal S., Morphology of the Boride Phase in a Cast Iron-Aluminide Matrix Composite , J. Mater. Sci. Lett., 15(14), 1216-1218 (1996) (Experimental Meehan. Prop., Crys. Structure, 11)... 

Mar] Martini, C., Palombarini, G., Carbuciccio, M., Mechanism of Thermochemical Growth of hon Borides on Iron , J. Mater. Sci, 39(3), 933-937 (2004) (Ciys. Structure, Experimental, Kinetics, Morphology, Phase Relations, 19)... 

Boe] Boehmann, G., Klaus, E., Fritsche, G., Wagnre, W., Phase Structure of Boride Layers on Iron Substrates with Eleetroplated Cobalt Layers , Crysi Res. Techn., 22(7), 961-967 (1987) (ExperimentaL Morphology, 14)... 

Bro] Brown, B.E., Beemtsen, D.J., Refinement of an Iron Chromium Boride wifli die MU4B Structure , Acta Crystallogr., 17, 448-450 (1964) (Crys. Structure, Experimental, 12)... 

Sho] Shoemaker, C.B., Shoemaker, D.P., Fruchart, R., The Structure of a New Magnetic Phase Related to the Sigma Phase - Iron Neodymium Boride Nd2Fei4B , Acta Crystallogr, Sect. C Cryst. Struct. Commun., 40, 1665-1668 (1984) (Crys. Structure, Experimental, 10)... 

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