Pyroelectric materials can operate with a high thermodynamic efficiency, compared to thermoelectric, it does not require bulky heat sinks to maintain the temperature gradient. Many materials that can be used for the production of infrared pyroelectric detectors exist. The choice of one is a difficult task because of many parameters involved in the calculation of the desired characteristics of the device that has to be designed, such as detector size, operating temperature, frequency of operation, and etc. A material of a lower performance than triglycine sulphate (TGS), but possessing high chemical stability, low loss, good figure of merit, high Curie temperature and good insolubility in water is the lithium tantalite. In this review, the pyroelectric properties of various materials are discussed how they can improve the properties of detector in potential applications.