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钙钛矿型锰氧化物以其大的磁电阻（CMR）效应和丰富的物理内涵而成为当前凝聚态物理研究的热点、本工作通过中于衍射和X射线技术研究Nd0.5Sr0.4Pb0.1MnO3的晶体结构,以确定氧原子的原子坐标和占位,并获得与磁学特性密切相关的晶胞常数以及键长、键角等信息。 样品用传统的高温固相反应法制得。所选的氧化物原料均为分析纯以上。将一定摩尔比的原料在无水乙醇的保护下研磨后,把粉体放在坩埚中预烧24h,然后,将所得的粉体研磨均匀、干燥、压块,在箱式炉中长时烧结。为保持样品的均匀性,中间经历一次打断、研磨、压块和烧结过程。用X射线衍射确定样品的单相性。
Perovskite type manganese oxide has become a hot research topic in condensed matter physics due to its large magnetic resistance (CMR) effect and rich physical connotation. In this work, Nd0.5Sr0.4Pb0.1MnO3 Crystal structure to determine the atomic coordinates of oxygen atoms and placeholders, and get closely related to the magnetic properties of the unit cell constant as well as bond length, bond angle and other information. Samples were prepared by conventional high temperature solid-phase reaction. The selected oxide materials are above analytical grade. After grinding a certain molar ratio of raw materials under the protection of anhydrous ethanol, the powder is calcined in a crucible for 24 hours, and then the obtained powder is uniformly ground, dried and pressed for long sintering in a box furnace . In order to maintain the uniformity of the sample, the intermediate one undergoes a break, grinding, briquetting and sintering process. The monophase of the sample was confirmed by X-ray diffraction.