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Synthesis and Magnetic Properties of Ba 2 Mn 2 Si 2 O 9 : the First Example of S =2 Spin‐Dimer with Spin‐Singlet Ground State

2009; Wiley; Volume: 4; Issue: 10 Linguagem: Inglês

10.1002/asia.200900235

1861-4728

Zhangzhen He, Myung‐Hwan Wangbo, Yutaka Ueda, Yasuo Narumi, Koichi Kindo, Tomoyasu Taniyama, Mitsuru Itoh, Wen‐Dan Cheng,

Multiferroics and related materials

Correlation of structure and property: Ba2Mn2Si2O9 consists of Mn2O8 dimers made up of two basal-edge-sharing MnO5 square pyramids. Magnetic measurements show that this material displays a spin-singlet ground state with a large spin gap. The spin-dimer analysis suggests that the origin of the spin gap is likely to arise from a large intra-dimer interaction between the Mn1O5 and Mn2O5 square pyramids. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.