TY - JOUR
T1 - PbMn(IV)TeO6
T2 - A New Noncentrosymmetric Layered Honeycomb Magnetic Oxide
AU - Kim, Sun Woo
AU - Deng, Zheng
AU - Li, Man Rong
AU - Sen Gupta, Arnab
AU - Akamatsu, Hirofumi
AU - Gopalan, Venkatraman
AU - Greenblatt, Martha
N1 - Funding Information:
S.W.K., Z.D., M.R.L., and M.G. gratefully acknowledge support from the ARO-434603 grant (DOD-VV911NF-12-1-0172). A.S.G., H.A., and V.G. gratefully acknowledge support from the National Science Foundation MRSEC Center for Nanoscale Science at Penn State through Grant DMR-1420620. S.W.K. thanks Prof. Mark Croft for fruitful discussions and Graeme Gardner for EDX measurements.
Publisher Copyright:
© 2016 American Chemical Society.
PY - 2016/2/1
Y1 - 2016/2/1
N2 - PbMnTeO6, a new noncentrosymmetric layered magnetic oxide was synthesized and characterized. The crystal structure is hexagonal, with space group P62m (No. 189), and consists of edge-sharing (Mn4+/Te6+)O6 trigonal prisms that form honeycomb-like two-dimensional layers with Pb2+ ions between the layers. The structural difference between PbMnTeO6, with disordered/trigonal prisms of Mn4+/Te6+, versus the similar chiral SrGeTeO6 (space group P312), with long-range order of Ge4+ and Te6+ in octahedral coordination, is attributed to a difference in the electronic effects of Ge4+ and Mn4+. Temperature-dependent second harmonic generation by PbMnTeO6 confirmed the noncentrosymmetric character between 12 and 873 K. Magnetic measurements indicated antiferromagnetic order at TN ≈ 20 K and a frustration parameter (|θ|/TN) of ∼2.16.
AB - PbMnTeO6, a new noncentrosymmetric layered magnetic oxide was synthesized and characterized. The crystal structure is hexagonal, with space group P62m (No. 189), and consists of edge-sharing (Mn4+/Te6+)O6 trigonal prisms that form honeycomb-like two-dimensional layers with Pb2+ ions between the layers. The structural difference between PbMnTeO6, with disordered/trigonal prisms of Mn4+/Te6+, versus the similar chiral SrGeTeO6 (space group P312), with long-range order of Ge4+ and Te6+ in octahedral coordination, is attributed to a difference in the electronic effects of Ge4+ and Mn4+. Temperature-dependent second harmonic generation by PbMnTeO6 confirmed the noncentrosymmetric character between 12 and 873 K. Magnetic measurements indicated antiferromagnetic order at TN ≈ 20 K and a frustration parameter (|θ|/TN) of ∼2.16.
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U2 - 10.1021/acs.inorgchem.5b02677
DO - 10.1021/acs.inorgchem.5b02677
M3 - Article
AN - SCOPUS:84956641013
SN - 0020-1669
VL - 55
SP - 1333
EP - 1338
JO - Inorganic chemistry
JF - Inorganic chemistry
IS - 3
ER -