Highly anisotropic 1/3-magnetization plateau in a ferrimagnet Cs2Cu3(SeO3)4·2H2O: topology of magnetic bonding necessary for magnetization plateau

A V Moskin; E S Kozlyakova; L V Shvanskaya; D A Chareev; Hyun-Joo Koo; Myung-Hwan Whangbo; A N Vasiliev

doi:10.1039/d2dt03517k

Highly anisotropic 1/3-magnetization plateau in a ferrimagnet Cs₂Cu₃(SeO₃)₄·2H₂O: topology of magnetic bonding necessary for magnetization plateau

Dalton Trans. 2022 Dec 20;52(1):118-127. doi: 10.1039/d2dt03517k.

Authors

A V Moskin^{1

2}, E S Kozlyakova^{1

2}, L V Shvanskaya^{1

2}, D A Chareev^{2

3}, Hyun-Joo Koo³, Myung-Hwan Whangbo^{4

5}, A N Vasiliev^{1

2}

Affiliations

¹ Lomonosov Moscow State University, Moscow 119991, Russia. vasil@lt.phys.msu.ru.
² National University of Science and Technology "MISiS", Moscow 119049, Russia.
³ Institute of Experimental Mineralogy, RAS, Chernogolovka 142432, Russia.
⁴ Department of Chemistry and Research Institute for Basic Sciences, Kyung Hee University, Seoul 02447, Republic of Korea. mike_whangbo@ncsu.edu.
⁵ Department of Chemistry, North Carolina State University, Raleigh, NC 27695, USA.

PMID: 36468631
DOI: 10.1039/d2dt03517k

Abstract

We prepared Cs₂Cu₃(SeO₃)₄·2H₂O composed of Cu²⁺ ions at square-planar coordination sites and characterized its structural and magnetic properties, to show that Cs₂Cu₃(SeO₃)₄·2H₂O is a ferrimagnet exhibiting a highly anisotropic 1/3-magnetization plateau. This unprecedented anisotropy in a magnetization plateau is the consequence of three effects, namely, the orthogonal arrangements of the corner-sharing CuO₄ square planes, the nearest-neighbour antiferromagnetic exchange, and the anisotropic g-factor of the Cu²⁺ ions at square-planar coordination sites. By analyzing the topology of magnetic bonding, we found why magnetic plateaus are observed only for certain ferrimagnets and antiferromagnets.