Na 2 Ir IV Cl 6: The Missing Member of the Perfectly Cubic Vacancy Ordered A 2 IrCl 6 Family, Another Potential J eff = 1 over 2 Ground State Candidate
Researchers synthesized and characterized anhydrous single crystals of cubic Na2IrCl6, a vacancy ordered double perovskite. The study confirms its fcc structure and finds it exhibits long-range antiferromagnetic order at 1.91 K, suggesting it is a strong candidate for the ideal Jeff = 1/2 ground state in this material class.