{"paper":{"title":"Neutron Diffraction and $\\mu$SR Studies of Two Polymorphs of Nickel Niobate (NiNb$_2$O$_6$)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.other","authors_text":"A.A. Aczel, A. Millington, C. Ding, C.M. Thompson, F. Ning, G.M. Luke, H.A. Dabkowska, H.B. Cao, J.E. Greedan, M.N. Wilson, R. Flacau, S. Guo, T.J.S. Munsie, T.J. Williams, Z. Gong","submitted_at":"2017-04-13T09:16:00Z","abstract_excerpt":"Neutron diffraction and muon spin relaxation ($\\mu$SR) studies are presented for the newly characterized polymorph of NiNb$_2$O$_6$ ($\\beta$-NiNb$_2$O$_6$) with space group P4$_2$/n and $\\mu$SR data only for the previously known columbite structure polymorph with space group Pbcn. The magnetic structure of the P4$_2$/n form was determined from neutron diffraction using both powder and single crystal data. Powder neutron diffraction determined an ordering wave vector $\\vec{k}$ = ($\\frac{1}{2},\\frac{1}{2},\\frac{1}{2}$). Single crystal data confirmed the same $\\vec{k}$-vector and showed that the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.04043","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}