Ferroelectric materials, mainly Pb-containing, have widespread applications in our modern-day life, primarily used as sensors, actuator and memories. However challenges still remain to understand the structure-property relations at the atomic level, which is crucial in order to develop bespoke materials with improved qualities, and to find Pb-free alternatives to avoid environmental concerns. Here we aim to investigate a couple of novel reduced Pb-content ferroelectric systems, which have been recently shown to be promising high-temperature piezoelectric materials with the so-called morphotropic phase boundary (MPB). Pair distribution functions as a function of composition at ambient and non-ambient temperature will be studied with a view to establish how the chemical variation can influence the local structure and atomic dynamics, and consequently impacts the properties of the system.