Altermagnetism is a recently discovered form of magnetic order that uniquely combines features of both ferromagnetism and antiferromagnetism. Unlike conventional magnetic systems, altermagnets exhibit spin-splitting in their electronic band structure while maintaining zero net magnetization. This novel behavior arises from symmetry-protected spin arrangements and opens new frontiers in condensed matter physics and spintronics, especially for applications that benefit from magnetic functionality without external stray fields.

This research is dedicated to uncovering the emergent physical and electronic properties of altermagnetic materials, with a strong emphasis on bulk crystal growth and comprehensive characterization. The study begins with the synthesis of high-quality bulk crystals of altermagnetic candidates. Traditional solid-state reactions, flux growth methods, and the Bridgman-Stockbarger technique are employed to produce large, well-ordered single crystals. Precise control over stoichiometry, temperature gradients, cooling rates, and atmospheric conditions is key to achieving phase purity and desirable magnetic structures.

After synthesis, the bulk crystals undergo a comprehensive suite of characterization techniques to investigate their structural, magnetic, and electronic behavior. Structural analysis is conducted using high-resolution X-ray diffraction (XRD) and Laue backscattering to verify crystal symmetry and orientation. Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX) are used to examine surface morphology and elemental composition, ensuring homogeneity and absence of secondary phases.

To probe the magnetic properties, techniques such as SSM magnetometry and neutron diffraction are employed. These methods provide insight into the magnetic ordering at both macroscopic and atomic scales and are essential for confirming the key altermagnetic feature of zero net magnetization despite broken spin degeneracy.

Electronic and spin-resolved properties of the bulk crystals are explored using bulk-sensitive techniques such as hard X-ray photoelectron spectroscopy (HAXPES) and synchrotron-based angle-resolved photoemission spectroscopy (ARPES). These methods reveal the spin-polarized band structures that are central to the altermagnetic state. Additionally, transport measurements—including the anomalous Hall effect (AHE), magnetoresistance, and thermal transport—are conducted to connect microscopic spin phenomena with macroscopic observables.
This research seeks to establish a fundamental understanding of how symmetry, crystal structure, and magnetic ordering interrelate in altermagnetic materials, using bulk crystals as a platform. The insights gained not only deepen our understanding of magnetic quantum materials but also lay the groundwork for future applications in spintronic devices where low-dissipation, field-free spin control is desirable.