A variety of elastic anomalies in orbital-active nearly-itinerant cobalt vanadate spinel

Tadataka Watanabe, Shogo Yamada, Rui Koborinai +1

We perform ultrasound velocity measurements on a single crystal of nearly-metallic spinel Co${}_{1.21}$V${}_{1.79}$O${}_4$ which exhibits a ferrimagnetic phase transition at $T_C\sim$ 1…