Magnetic-Field-Induced Dielectric Anomalies in Cobalt-Containing Garnets

Published

April 11, 2022

Author(s)

Abbey J. Neer, Joanna Milam-Guerrero, Veronika A. Fischer, Michelle Zheng, Nicole R. Spence, Clayton Cozzan, Mingqiang Gu, James M. Rondinelli, Craig Brown, Brent C. Melot

Abstract

We present a comparative study of the magnetic and crystal chemical proper-ties of two Co²⁺ containing garnets.CaY₂Co₂Ge₃O₁₂ and NaCa₂Co₂V₃O₁₂ both exhibit the onset of antiferromagnetic order at 8 K and 6 K as well as field-induced transitions around 7 T and 10 T, respectively that manifest as anomalies in the dielectric properties of the material. We perform detailed crystal-chemistry analyses and complimentary density functional theory calculations to show that very minor changes in the local environment of the Co-ions explain the differences in the two magnetic structures and their respective properties.

Citation

Inorganic Chemistry

Volume

61

Issue

14

Pub Type

Journals

Keywords

magnetism, garnet, neutron diffraction, multiferroic

Citation

Neer, A. , Milam-Guerrero, J. , Fischer, V. , Zheng, M. , Spence, N. , Cozzan, C. , Gu, M. , Rondinelli, J. , Brown, C. and Melot, B. (2022), Magnetic-Field-Induced Dielectric Anomalies in Cobalt-Containing Garnets, Inorganic Chemistry (Accessed October 21, 2025)