Exotic rare earth-based materials for emerging spintronic technology

TL;DR

This paper reviews the properties and potential applications of rare earth-based materials in spintronics, highlighting their unique electronic and magnetic features that could advance future spintronic devices and technologies.

Contribution

It provides a comprehensive overview of rare earth materials, including Heusler alloys and topological insulators, emphasizing their potential in emerging spintronic applications.

Findings

Rare earth materials exhibit large spin polarization and strong spin-orbit coupling.

Combination of rare earths with transition metals broadens material properties.

Rare earth-based materials are promising for next-generation spintronic devices.

Abstract

The progress in materials science has always been associated with the development of functional materials systems, which enables us to design proof-of-concept devices. To advance further, theoretical predictions of new novel materials and their experimental realization is very important. This chapter reviews the intriguing properties of rare earth-based materials and their applications in spintronics. Spintronics is an emerging technology, which exploits spin degree of freedom of an electron along with its charge property. Discovery of various physical phenomena and their industrial applications in the field of magnetic sensors, magnetic recording and non-volatile memories such as magnetic random access memory (MRAM) and spin-transfer torque (STT) MRAM opens several new directions in this field. Materials with large spin polarization, strong spin-orbit coupling, and tunable electronic and magnetic properties offer an excellent platform for the spintronics technology. Combination of rare earths with other elements such as transition metals show broad range of structural, electronic, and magnetic properties which make them excellent candidates for various spintronic applications. This chapter discusses many such materials ranging from Heusler alloys, topological insulators to two-dimensional ferromagnets and their potential applications. The review gives an insight of how rare-earth materials can play a key role in emerging future technology and have great potential in many new spintronic related applications.