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arXiv · 2103.14505

Single crystal growth and physical properties of pyroxene CoGeO$_3$

L. Zhao·Z. Hu·H. Guo·C. Geibel·H. J. Lin·C. T. Chen·D. I. Khomskii·L. H. Tjeng·A. C. Komarek
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Abstract

We report on the synthesis and physical properties of cm-sized CoGeO$_3$ single crystals grown in a high pressure mirror furnace at pressures of 80~bar. Direction dependent magnetic susceptibility measurements on our single crystals reveal highly anisotropic magnetic properties that we attribute to the impact of strong single ion anisotropy appearing in this system with T$_N$~$\sim$~33.5~K. Furthermore, we observe effective magnetic moments that are exceeding the spin only values of the Co ions which reveals the presence of sizable orbital moments in CoGeO$_3$.

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L. Zhao, Z. Hu, H. Guo, C. Geibel, H. J. Lin, C. T. Chen, D. I. Khomskii, L. H. Tjeng, A. C. Komarek. 2021-03-26. Single crystal growth and physical properties of pyroxene CoGeO$_3$. https://doi.org/10.3390/cryst11040378

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