2026. DETERMINATION OF SPIN-BASED HALF-METALLIC, MECHANICAL, MAGNETIC AND THERMODYNAMIC PROPERTIES OF QUATERNARY HALF-HEUSLERS ZRCOFEX (X=SI, AS AND GE) USING FIRST-PRINCIPLE CALCULATIONS. The Transactions of the Nigerian Association of Mathematical Physics. 24, (Mar. 2026), 71–88. DOI:https://doi.org/10.60787/tnamp.v24.669.