Negative thermal expansion behaviour in the NZP phase NbTi(PO4)3

DA Woodcock, Philip Lightfoot, RI Smith

Research output: Other contribution

8 Citations (Scopus)


We present new detailed structural data versus temperature on the Nasicon structured material NbTi(PO4)(3) obtained from powder neutron diffraction studies. This material shows a significant volume contraction over the range 20 degrees C < T < 700 degrees C. alpha(a) varies between -4.34 and -0.11 x 10(-6)degrees C-1 and alpha(c) between 0.08 and 3.07 x 10(-6)degrees C-1 over this range. This behaviour contrasts with the case of NaTi2(PO4)(3) (NaTP) which shows a positive volume expansion. The difference in this behaviour can be explained by the presence of filled MI sites in NaTP which are vacant in the case of NbTP.

Original languageEnglish
Number of pages191
Publication statusPublished - 1999


Dive into the research topics of 'Negative thermal expansion behaviour in the NZP phase NbTi(PO4)3'. Together they form a unique fingerprint.

Cite this