Materials Transactions Online

Materials Transactions, Vol.55 No.08 (2014) pp.1129-1133
© 2014 The Japan Institute of Metals and Materials

Local Structural Analysis on Decomposition Process of LiAl(ND2)4

Kazutaka Ikeda1, Toshiya Otomo1, 2, Hidetoshi Ohshita1, Naokatsu Kaneko1, Masami Tsubota1, Kentaro Suzuya3, Fumika Fujisaki2, Taisuke Ono4, Toshiyuki Yamanaka4, Keiji Shimoda5, Takayuki Ichikawa4, 5 and Yoshitsugu Kojima4, 5

1Institute of Materials Structure Science, KEK, Tsukuba 305-0801, Japan
2Department Materials Structure Science, The Graduate University for Advanced Studies, Hayama 240-0193, Japan
3J-PARC Center, Japan Atomic Energy Agency, Naka-gun, Ibaraki 319-1195, Japan
4Graduate School of Advanced Sciences of Matter, Hiroshima University, Higashi-Hiroshima 739-8530, Japan
5Institute for Advanced Materials Research, Hiroshima University, Higashi-Hiroshima 739-8530, Japan

Local structural changes that accompany amorphization during the decomposition of LiAl(ND2)4 were investigated by neutron total scattering measurements. Structure factors before the decomposition were attributed to single-phase LiAl(ND2)4 characterized by isolated [ND2] units. Atomic pair distribution functions after heat treatments at 433 and 673 K showed that LiAl(ND2)4 decomposed to amorphous mixed phases that contain Li3AlN2 and AlN.

(Received 2014/02/04; Accepted 2014/03/31; Published 2014/07/25)

Keywords: neutron total scattering, pair distribution function, hydrogen, amide

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