Status report on ferroelectric memory materials

Exploring pure and RE co-doped (Eu3+, Tb3+ and Dy3+) gadolinium scandate: Luminescence behaviour and dynamics of energy transfer

“…The structural allows for the accommodation of a large variety of elements at A and B-positions without destroying the main matrix structure and thus they are a very attractive class of materials for studying the structure-property relationships. Perovskite-based oxides have already been shown to exhibit technologically attractive properties like ferroelectricity, pyroelectricity, and piezoelectricity behaviour [5][6][7][8]. Structurally, an ideal perovskite is characterised by corner sharing BO 6 octahedra wherein larger A cation occupies the bigger 12-co-ordinated site.…”

Preparation and characterisation of PZT films by RF-magnetron sputtering

“…PbZr x Ti 1−x O 3 (PZT) films are widely used in many technological applications, such as nonvolatile memories [1], piezoelectric devices (transducers, actuators, sensors, surface acoustic wave filters and others) [2,3], electrooptic or thermal sensors [4]. Their large applicability is due to the fact that PZT possess a suitable combination of a few basic properties such as (i) relatively high Curie temperature allowing a wide operating temperature range for applications and ferroelectricity at room temperature, (ii) high electromechanical coupling coefficient; (iii) wide range of values for the material constants (dielectric, ferroelectric, piezoelectric, piroelectric); (iv) capability to form easy solid-solutions with various compositions, thus allowing a wide range of properties values.…”

Luminescence of the Cr3+ ions doped in PLZT ceramics

“…Lead lanthanum zirconate titanate (PLZT) is a typical ferroelectric relaxor material with very interesting piezoelectric properties for applications in optoelectronics devices, particularly in ferroelectric memories applications [1]. In general, the properties of PLZT materials are very sensitive to the processing method because it is very difficult to maintain the stoichiometric composition during the various different thermal treatments.…”