Magnetic Nanomaterials and Emerging Spintronic Research

Dear Colleagues,

There has been a strong emergence of research efforts aimed towards developing novel nanoscale magnets and materials with emerging spintronic properties. Within recent decades, spintronics has developed as a multidisciplinary transformative field, with deep connections and potential applicability in sustainable energy production, data storage, telecommunications and nanosensing technologies. On the other hand, nanocomposite magnets are widely used across industrial technologies, from electric mobility, e-vehicles, and domestic households to magnetic recording media, aircraft, and renewable energy generation for wind turbine components. Demand for magnets continues to increase, with the most notable demand coming from autonomous and hybrid electric vehicles, wind turbines, automation and robotics, and smart phones and telecommunication, as well as a wide range of medical devices for imaging, diagnostics, and therapies. Hence, the research community has taken great interest in identifying novel nanoscale magnetic materials with low rare earth content, based on abundant elements, and which are cost-effective and easy to process without compromising their magnetic performance.

Spin dynamics at ultrafast timescales, together with spin-to-charge conversion mechanisms such as spin Hall effect (SHE) and the inverse spin Hall effect (ISHE), are at the center of current research in the field of spintronics since they have significant potential to produce technological impacts and interconnect spintronics with optics and photonics, phononics, and electronics. One particular example is the case of terahertz (THz) spintronics. This emerging domain of spintronics deals with magnetic nanostructures composed of ferromagnetic and non-magnetic metallic bilayers, trilayers, and multilayers—so-called spintronic THz emitters.

This Special Issue will showcase the latest developments in the synthesis, fabrication, and characterization of novel nanoscale magnets, spintronic materials, and devices, including, but not limited to, applications for THz spintronics.

We aim to highlight cutting-edge research on the design and application of nanoscale spintronic systems, fostering interdisciplinary collaboration across materials science, physics, and engineering.

We particularly encourage submissions that focus on advanced computational methods, machine learning approaches for materials discovery, and innovative strategies in novel nanoscale magnets, Thz emitters, spintronic device fabrication, and performance.

The creation of this Special Issue is motivated by current needs for advanced spintronic devices, including THz emitters, as well as alternative solutions and a paradigm shift away from existing, commonly employed magnetic materials.

This Special Issue aims to address all of the challenges encountered when developing novel nanocomposite magnets with low rare earth content, including, but not limited to, the following:

• Theories and models of novel magnetic alloy compositions;
• Spin dynamics at ultrafast timescales;
• Spin-to-charge conversion mechanisms;
• Devising of magnetic heterostructures and spintronic devices such as THz emitters;
• Synthesis challenges and microstructure optimization for novel nanocomposite magnets;
• Magnetic phase co-existence and phase stability in operating conditions for magnets;
• Hard–soft exchange coupling in multi-phase magnetic nanocomposites;
• The optimization of magnetic performance in nanocomposite magnets with low rare earth content;
• The trade-off between lowering costs and retaining magnetic performance;
• Magnetic performance in extreme operating conditions.

We look forward to receiving your contributions and to advancing the field of novel nanoscale magnets and emerging spintronic devices and phenomenology.

Dr. Ovidiu Crisan
Guest Editor

Manuscript Submission Information

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• spin dynamics
• spin-to-charge conversion
• ultrafast timescales
• magnetic heterostructures
• spintronic devices
• THz emitters
• nanocomposite magnets
• RE-free nanoscale magnets
• phase stability in operating conditions
• hard–soft exchange coupling
• magnetic performances in extreme conditions