The Kitaev quantum spin liquid is a highly entangled state with fractionalized excitations—Majorana fermions—that are promising for fault-tolerant quantum computing. Honeycomb cobaltites are proposed to realize Kitaev-type exchange interactions due to a distinct hierarchy among crystal electric field effects, spin-orbit coupling, and lattice geometry. However, whether these materials truly support significant Kitaev interactions remains under debate. In this talk, I will present an approach using high-field torque magnetometry to probe magnetic anisotropy as a signature of these interactions. By scaling the torque data, we can uncover the microscopic origin of the anisotropy. To measure torque in bulk samples, capacitive torque magnetometry is preferred. As a first step toward this, I will also present a method for implementing capacitance measurements in pulsed magnetic fields.

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