Quadruple perovskites Ba(4)LnRu(3)O(12) (Ln=La, Nd, Sm-Gd, Dy-Lu) were prepared and their magnetic properties were investigated. They adopt the 12L-perovskite-type structure consisting of Ru3O12 trimers and LnO(6) octahedra. All of these compounds show an antiferromagnetic transition at 2.5-30 K. For Ba4NdRu3O12, ferrimagnetic ordering has been observed at 11.5 K. The observed magnetic transition is due to the magnetic behavior of the Ru34.33+O12 trimer with S=1/2. Magnetic properties of Ba(4)LnRu(3)O(12) were compared with those of triple perovskites Ba(3)LnRu(2)O(9) and double perovskites Ba(2)LnRuO(6). (C) 2009 Elsevier Inc. All rights reserved.
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Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Dept Mat Sci & Engn, Beijing 100084, Peoples R ChinaTsinghua Univ, State Key Lab New Ceram & Fine Proc, Dept Mat Sci & Engn, Beijing 100084, Peoples R China
Zhou, Yuanyuan
Yue, Zhenxing
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Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Dept Mat Sci & Engn, Beijing 100084, Peoples R ChinaTsinghua Univ, State Key Lab New Ceram & Fine Proc, Dept Mat Sci & Engn, Beijing 100084, Peoples R China
Yue, Zhenxing
Meng, Siqin
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Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Dept Mat Sci & Engn, Beijing 100084, Peoples R ChinaTsinghua Univ, State Key Lab New Ceram & Fine Proc, Dept Mat Sci & Engn, Beijing 100084, Peoples R China
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Univ Oxford, Inorgan Chem Lab, South Parks Rd, Oxford OX1 3QR, EnglandUniv Oxford, Inorgan Chem Lab, South Parks Rd, Oxford OX1 3QR, England
Xu, Diming
Avdeev, Maxim
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Australian Nucl Sci & Technol Org, Lucas Heights, NSW 2234, Australia
Univ Sydney, Sch Chem, Sydney, NSW 2006, AustraliaUniv Oxford, Inorgan Chem Lab, South Parks Rd, Oxford OX1 3QR, England
Avdeev, Maxim
Battle, Peter D.
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Univ Oxford, Inorgan Chem Lab, South Parks Rd, Oxford OX1 3QR, EnglandUniv Oxford, Inorgan Chem Lab, South Parks Rd, Oxford OX1 3QR, England