Neodymium doped bismuth layer structure ferroelectrics (BLSFs) ceramics CaBi
4−xNd
xTi
4O
15 (
x=0, 0.25, 0.50, 0.75) were prepared by solid-state reaction method. X-ray diffraction pattern showed that single phase was formed when
x=0-0.75. The refined lattice parameters showed that
a (
b) axes decrease at
x=0.25 and increase with more Nd
3+ dopant. The effects of Nd
3+ doping on the dielectric and ferroelectric properties of CaBi
4Ti
4O
15 ceramics are studied. Nd
3+ dopant decreased the Curie temperature linearly, and the dielectric loss, tan
δ, as well. The remnant polarization of Nd
3+ doped CaBi
4Ti
4O
15 ceramics was increased by 80% at
x=0.25, while more Nd
3+ dopant decreased the remnant polarization. CaBi
3.75Nd
0.25Ti
4O
15 ceramics had the largest piezoelectric constant
d33. The structure and properties of CaBi
4−xNd
xTi
4O
15 ceramics showed that Nd
3+ may occupy different crystal locations when Nd
3+ content
x is less than 0.25 and more than 0.50.
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