This review aims to summarize more than 100 years of research on spinel compounds,
mainly focusing on the progress in understanding their magnetic, electronic, and polar …

The present review discusses different effects related to orbital degrees of freedom. Leaving
aside such aspects as the superexchange mechanism of cooperative Jahn–Teller …

We consider the superstructures, which can be formed in spinels containing on B sites the
transition-metal ions with partially filled t 2 g levels. We show that, when such systems are …

The spinel crystal system, AB 2 O 4, has been fertile ground in studying the effects of
magnetic and orbital frustration. The experimental findings, with primary focus on neutron …

We use high-resolution synchrotron x-ray and neutron diffraction to study the geometrically
frustrated triangular lattice antiferromagnet Cu Fe O 2. On cooling from room temperature …

We studied the structural properties of an orbital-spin-coupled spinel oxide, MnV 2 O 4,
mainly by single-crystal x-ray diffraction measurement. It was found that a structural phase …

The metal–insulator transition (MIT) of VO 2 is discussed with particular emphasis on the
structural instability of the rutile compounds toward dimerization. Ti substitution experiments …

Dual-phase high entropy oxide (HEO) ceramics (FeCoNiZn) x V 2 O y were prepared using
a simple sintering process. Vanadium oxide was selected due to the characteristics of …

Transition-metal spinels (general formula AB 2 X 4) have been, for many years, the subject
of intense experimental and theoretical activity. Structurally, the most interesting feature of …

We present temperature-, magnetic-field-, and pressure-dependent Raman scattering
studies of single crystal Mn 3 O 4, combined with temperature-and field-dependent x-ray …