PbTiO₃-based perovskite ferroelectric and multiferroic thin films.

Area of Science:

• Materials Science
• Solid State Physics
• Condensed Matter Physics

Background:

• Ferroelectric thin films, particularly lead titanate (PbTiO3)-based perovskites, are crucial for devices due to their spontaneous electrical polarization.
• Advances in synthesis, characterization, and calculation techniques have revealed diverse phenomena and properties in these films.

Purpose of the Study:

• To introduce typical PbTiO3-based perovskite thin films modified by composition control, offering diverse ferroelectric and other properties.
• To explore strain engineering and interfacial effects for controlling lattice, electronic, and domain structures crucial for ferroelectricity.
• To discuss progress in multiferroic PbTiO3-based perovskite thin films and their novel applications, such as magnetic-field-controlled polarization reversal.

Main Methods:

• Compositional engineering of PbTiO3-based perovskite thin films.
• Application of strain engineering and interfacial effects.
• Investigation of multiferroic properties and phenomena.

Main Results:

• Demonstration of diverse ferroelectric and other properties through composition control.
• Control over lattice, electronic, and domain structures via strain and interfacial effects.
• Progress in multiferroic PbTiO3-based thin films enabling novel applications.

Conclusions:

• PbTiO3-based ferroelectric and multiferroic thin films offer significant potential for advanced device applications.
• Composition control and strain engineering are key strategies for tailoring film properties.
• Addressing challenges like leakage current and fatigue is essential for practical implementation.