高温高压合成岩盐MeO-ZnO固溶体（Me = Ni2 +，Co2 +，Fe2 +，Mn2 +）
Synthesis of rock-salt MeO-ZnO solid solutions (Me = Ni2+, Co2+, Fe2+, Mn2+) at high pressure and high temperature
摘要：
在7.7GPa和1450-1650 K温度范围内，用淬火法从二元氧化物中合成了一系列具有岩盐（rs）晶体结构的亚稳Me_（1-x）Zn_xO（Me = Ni ~（2+），Co ~（2+），Fe ~（2+），Mn ~（2+））固溶体。样品的相组成，以及合成的固溶体的结构特性和化学计量已通过X射线粉末衍射，常规和同步辐射进行了研究。在NiO-ZnO体系中，存在单个岩盐固溶体的最宽组成范围（0.3 \leq x \leq 0.8）已被确定。块状rs-Co 1-xZnxO、rs-Fe 1-xZnxO和rs-Mn 1-xZnxO固溶体仅在ZnO含量降低两倍（即x \leq分别为0.5、0.5和0.4）的情况下才可淬冷至环境条件;而在CdO-ZnO体系中在整个浓度范围内未观察到岩盐固溶体的形成。
英文摘要：
Series of metastable Me1-xZnxO solid solutions (Me = Ni2+, Co2+, Fe2+, Mn2+) with the rocksalt (rs) crystal structure have been synthesized from the binary oxides by quenching from 7.7 GPa and 1450-1650 K. Phase composition of the samples, as well as structural properties and stoichiometry of synthesized solid solutions have been studied by X-ray powder diffraction, both conventional and with synchrotron radiation. The widest (0.3 \leq x \leq 0.8) composition range of the existence of individual rock-salt solid solution has been established for the NiO-ZnO system. The bulk rs-Co1-xZnxO, rs-Fe1-xZnxO and rs-Mn1-xZnxO solid solutions may be quenched down to ambient conditions only with twice lower ZnO content, i.e. x \leq 0.5, 0.5 and 0.4, respectively; while formation of rock-salt solid solutions in the CdO-ZnO system has not been observed in the whole concentration range.
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