Monday 03 March 2025
Borides, a class of materials often overlooked in favour of more glamorous compounds like graphene and superconductors, have been hiding some surprising secrets. Researchers have discovered three new families of magnetic borides that exhibit exotic properties, including quantum magnetism and altermagnetism.
One of the most intriguing discoveries is a family of dimerized quantum magnets, which are materials that can exist in two different states at the same time. This property allows them to exhibit unusual magnetic behaviour, such as being both ferromagnetic (attracted to each other) and antiferromagnetic (repelled from each other) simultaneously.
These quantum magnets are found in a specific structure known as YCrB4-type borides, which were previously thought to be non-magnetic. The researchers used high-throughput calculations to identify the stable and metastable compounds within this family, and found that several of them exhibit dimerized quantum magnetism.
Another fascinating discovery is the existence of altermagnets, a new class of materials that exhibit momentum-dependent electronic band spin splitting. This means that the magnetic properties of these materials depend on the direction in which they are moving, rather than their intrinsic magnetic moment.
Altermagnets were found in FeMo2B2-type borides, which have a unique crystal structure that allows for the unusual magnetic behaviour. These materials could have important implications for the development of spintronics devices, which rely on the manipulation of electron spins to process information.
The third family of magnetic borides discovered by the researchers is known as MAB phases, which are found in AlFe2B2-type compounds. These materials exhibit a strong magnetocaloric effect, which means that they can change temperature in response to changes in their magnetic field. This property makes them promising candidates for use in magnetic refrigeration devices.
The discovery of these new families of magnetic borides has significant implications for our understanding of the properties of materials and their potential applications. The researchers used a combination of high-throughput calculations and experimental techniques to identify the stable and metastable compounds within each family, and found that several of them exhibit exotic magnetic behaviour.
Further study of these materials could lead to the development of new spintronics devices, as well as more efficient magnetic refrigeration systems. The discovery also highlights the importance of exploring less-studied material classes like borides, which can often yield unexpected surprises.
Cite this article: “Unlocking the Secrets of Magnetic Borides: New Families with Exotic Properties Discovered”, The Science Archive, 2025.
Magnetic Borides, Quantum Magnetism, Altermagnetism, Spintronics, Magnetic Refrigeration, Ferromagnetic, Antiferromagnetic, Momentum-Dependent Electronic Band Spin Splitting, Magnetocaloric Effect, High-Throughput Calculations.
