Synthesis, structure and magnetic characterization of a new phosphate K1.84Fe1.42Nb0.58(PO4)3 with the langbeinite-type structure

被引：3
|
作者：
Babaryk, Artem A. [1 ]
Zatovsky, Igor V. [1 ]
Slobodyanik, Nikolay S. [1 ]
Ogorodnyk, Ivan V. [1 ]
机构：
[1] Natl Taras Shevchenko Univ Kiev, Dept Inorgan Chem, UA-01033 Kiev, Ukraine
来源：
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES | 2008年 / 63卷 / 03期
关键词：
phosphates; crystal structure; langbeinite; magnetic measurements;
D O I：
10.1515/znb-2008-0321
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A new complex phosphate K1.84Fe1.42Nb0.58(PO4)(3) has been synthesized by the self-flux technique. The X-ray single crystal structure and magnetic properties were studied. The compound crystallizes in the cubic system with space group P2(1)3 (a = 9.9404(10) angstrom) and belongs to the langbeinite structure type. The structure contains [M2P3O18] building units. "Closed" fragments [M8P9O60] provide space for location of two potassium atoms. Antiferromagnetic interactions were detected at low temperatures which originate from superexchange through a M(1)-O-P-O-M(2) pathway with corresponding J = -5.5(1) cm(-1). The relationship between the UV/vis absorption and the structure is discussed.
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收藏
页码：345 / 348
页数：4
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