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首页> 外文期刊>International Journal of Quantum Chemistry >PREPARATION, CRYSTAL STRUCTURE, AND PROPERTIES OF A NEW DOUBLE METAL NITRIDE, SRNIN, AND OF CA1-XSRXNIN (0-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-0.5) SOLID SOLUTIONS
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PREPARATION, CRYSTAL STRUCTURE, AND PROPERTIES OF A NEW DOUBLE METAL NITRIDE, SRNIN, AND OF CA1-XSRXNIN (0-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-0.5) SOLID SOLUTIONS

机译：一种新型双金属氮化物SRNIN和CA1-XSRXNIN（0-少或等于-X-少-等于-0.5）固溶体的制备，晶体结构和性质

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A new double metal nitride, SrNiN, and solid solutions Ca1-xSrxNiN (0 less than or equal to x less than or equal to 0.5) were prepared by the reaction of Sr2N and/or alpha-Ca3N2 with nickel fine powder in a nitrogen atmosphere. SrNiN had an orthorhombic crystal lattice, Pnma, with a = 9.0859 Angstrom, and b = 13.231 Angstrom, and c = 5.2473 Angstrom and was isostructural with BaNiN. The present products have crystal structures composed of infinite [NiN2/2](2-) chains linked with tetrahedrally coordinated Sr2+ and/or Ca2+. The chain shapes are zigzag in SrNiN and linear in Ca1-xSrxNiN (0 less than or equal to x less than or equal to 0.5). Both crystal lattices have fee nitrogen packing. The difference in chain shape can be understood in terms of a limited range of distortion in the tetrahedron supporting [NiN2/2](2-) chains. All of these products were metallic conductors with residual electrical resistivities of order 10(-4) Ohm cm at 10 K. Electrical resistivities at room temperature were 6.0 x 10(-3) Ohm cm in SrNiN and 2-6 x 10(-4) Ohm cm in Ca1-xSrxNiN. They showed temperature-independent magnetic behavior at temperatures down to 77 K. (C) 1995 Academic Press, Inc. [References: 11]
机译：通过使Sr2N和/或α-Ca3N2与镍细粉在氮气氛下反应制得新的双金属氮化物SrNiN和固溶体Ca1-xSrxNiN（0小于等于x小于等于0.5） 。 SrNiN具有正交晶体晶格Pnma，a = 9.0859埃，b = 13.231埃，c = 5.2473埃，与BaNiN同构。本产品具有由与四面体配位的Sr2 +和/或Ca2 +连接的无限[NiN2 / 2]（2-）链组成的晶体结构。链的形状在SrNiN中呈锯齿状，在Ca1-xSrxNiN中呈线性（0小于或等于x小于或等于0.5）。两个晶格都有充氮填充。可以根据支撑[NiN2 / 2]（2-）的四面体的有限变形范围来理解链形状的差异。所有这些产品都是金属导体，在10 K时的残余电阻率为10（-4）Ohm cm。在SrNiN中，室温下的电阻率为6.0 x 10（-3）Ohm cm，在2-6 x 10（-4）中）Ca1-xSrxNiN中的欧姆厘米。他们在低至77 K的温度下表现出与温度无关的磁行为。（C）1995 Academic Press，Inc. [参考：11]

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