Abstract
A part of the pseudo-binary join Bi2O3–Bi2Mn4O10 of the ternary system Bi2O3–MnO–MnO2 was examined using thermo-analytical methods. Because Bi2Mn4O10 melts incongruently single crystals of up to 20mm in diameter were grown by the top seeded solution growth method in the temperature range from about 1223K to 1173K. Single crystal neutron diffraction confirmed the principles of the crystal structure of Bi2Mn4O10 but revealed much smaller distortions of the cation coordination polyhedra. In contrast to the anisotropy observed in other mullite-type Bi containing compounds, the linear thermal expansion of Bi2Mn4O10, as studied by means of dilatometry and X-ray powder diffraction techniques, is characterized by α11 > α33>α22 at room temperature. The relatively large expansion along the a-axis can be attributed to the two oxygen atoms bridging two corner shared MnO5 tetrahedral pyramids which alternate with the structural void between two adjacent Bi3+ cations.
References
[1] R.X.Fischer, H.Schneider, in: H.Schneider, S.Komarneni (Eds.): Mullite, Wiley-VCH, Weinheim (2005) 1.10.1002/3527607358Search in Google Scholar
[2] N.Niizeki, M.Wachi: Z. Kristallogr.127 (1968) 173. 10.1524/zkri.1968.127.1-4.173Search in Google Scholar
[3] I.Abrahams, A.J.Bush, G.E.HawkesT.Nunes: J. Solid State Chem.147 (1999) 631. 10.1006/jssc.1999.8427Search in Google Scholar
[4] Th.M.Gesing, R.X.Fischer, M.Burianek, M.Mühlberg, T.Debnath, C.H.Rüscher, J.Ottinger, J.-Ch.Buhl, H.Schneider: J. Eur. Ceram. Soc.31 (2011) 3055. 10.1016/j.jeurceramsoc.2011.04.004Search in Google Scholar
[5] J.H.Miao, T.-T.Fang, H.-Y.Chung, C.W.Yang: J. Am. Ceram. Soc.92 (2009) 2762. 10.1111/j.1551-2916.2009.03238.xSearch in Google Scholar
[6] O.Jarchow, K.-H.Klaska, M.Werk: Naturwissenschaften68 (1981) 92. 10.1007/BF01047230Search in Google Scholar
[7] J.A.Alonso, M.J.Martinez-Lope, M.T.Casais, J.L.Martinez, V.Pomjakushin: Eur. J. Inorg. Chem. (2005) 2600. 10.1002/ejic.200401057Search in Google Scholar
[8] H.Schneider, R.X.Fischer, Th.M.Gesing, J.Schreuer: Int. J. Mat. Res., 103 (2012) this issue.10.3139/146.110716Search in Google Scholar
[9] Yu.F.Kargin, V. Yu.Voevodskii: Russ. J. Inorg. Chem.45 (9) (2000) 1412.Search in Google Scholar
[10] M.Burianek, M.Mühlberg, M.Woll, M.Schmücker, Th.M.Gesing, H.Schneider: Cryst. Res. Technol.44 (2009) 1156. 10.1002/crat.200900465Search in Google Scholar
[11] G.M.Sheldrick: Acta Crystallogr. A64 (2008) 112. PMid: 18156677; 10.1107/S0108767307043930Search in Google Scholar PubMed
[12] T.F.Krenzel, J.Schreuer, Th.M.Gesing, M.Burianek, M.Mühlberg, H.Schneider: Int. J. Mat. Res., 103 (2012) this issue.Search in Google Scholar
[13] X.Hu, X.Liu, Q.He, H.Wang, S.Qin, L.Ren, C.M.Wu, L.Chang: Min. Mag.75 (2011) 363. 10.1180/minmag.2011.075.2.363Search in Google Scholar
[14] J.Schreuer, B.Hildmann, H.Schneider: J. Am. Ceram. Soc.89 (2006) 1624. 10.1111/j.1551-2916.2006.00921.xSearch in Google Scholar
[15] J.K.Winter, S.Ghose: Am. Min.64 (1979) 573.Search in Google Scholar
[16] H.Schneider, B.Hildmann, J.Schreuer: J. Eur. Ceram. Soc.28 (2008) 329. 10.1016/j.jeurceramsoc.2007.03.017Search in Google Scholar
[17] J.Schreuer, M.Burianek, M.Mühlberg, B.Winkler, D.J.Wilson, H.Schneider: J. Phys. Condens. Matter18 (2006) 10977. 10.1088/0953-8984/18/48/025Search in Google Scholar
© 2012, Carl Hanser Verlag, München