Bi（Pb）SrCaCuO超导陶瓷样品的特性动态磁化率测量法
Characteristics of Bi(Pb)SrCaCuO superconducting ceramics samples properties by method of dynamic magnetic susceptibility measurements
摘要：
文献和实验数据的实际测定相组成和结构的BiHTSC陶瓷的磁化率的温度依赖性的测量结果。结果表明，Bi 2223到Bi 2212相的比例，计算的XRD分析结果，并不精确相关的磁化率-温度依赖性。在磁化率-温度依赖性方面，少量存在的相，特别是具有较低临界温度的Bi 2212相，出现得不太明显。此外，超导颗粒接触的特性是迈斯纳效应表现的限制因素。不同类型的接触使相变临界温度降低，相变间隔变窄，相变阶段划分，相变间隔变大。在这种影响的负面后果中，存在实现晶粒取向的Bi陶瓷合成方案的障碍，这意味着由Bi 2223相的无序演变的晶粒组成的样品的粉末化，该相的获得的板晶粒的有序放置-例如，通过振动压实和烧结。
英文摘要：
Literature and experimental data about practical determination of phase composition and structure of BiHTSC ceramics from results of measurements of temperature dependence of magnetic susceptibility are presented. It is shown that Bi2223 to Bi2212 phases ratio, calculated by XRD-analysis results, does not correlate precisely with magnetic susceptibility - temperature dependence. Phase, which is present in smaller amount, especially Bi2212 phase with lower critical temperature, appears less pronouncedly at the magnetic susceptibility - temperature dependence. Besides, limiting parts of Meissner effect manifestation are peculiarities of contacts of superconducting grains. Different kinds of such contacts lead to lowering the critical temperature together with conservation of narrow transition interval, to division of transition into stages, and to increasing of transition interval. Among negative consequences of this influence there are hindrances in realization of grain oriented Bi ceramics synthesis scheme which imply powdering of samples consisting of chaotically evolved grains of Bi2223 phase, ordered placement of obtained plate grains of this phase - for example, through vibration compacting, and sintering.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
