Acquistion of Computer Automated Zero Field AC SusceptometerResistivity Instrumentation

该项目将提供一台计算机自动化的零场交流电纳计，具有四个探头交流电阻率和一个I特斯拉超导螺线管，允许在中等施加磁场下确定材料的磁相图。该仪器将用于各种新的和持续的研究领域，其中磁化率和/或电阻率测量起着至关重要的作用。具体项目包括(A)高温铜超导体的一般表征，(B)高Tc超导体多晶马赛克的场诱导取向，(C)高Tc超导体磁性行为的非线性和频率响应。(D)基于价均双核金属聚集体的导电有机金属聚合物的磁性和输运性质；(E)高自旋铁III络合氟化物的低温零场磁化率和Ho vs T相图行为。目前东北大学还没有这种仪器。它将由化学系和物理系的教员共享，并根据需要提供给其他用户。

This project will provide a computer automated, zero-field AC- susceptometer with four probe AC-resistivity and a I Tesla superconducting solenoid, allowing magnetic phase diagram determinations of materials over moderate applied fields. This instrumentation will be used in a variety of new and continuing research areas for which magnetic susceptibility and/or resistivity measurements play a crucial role. Specific projects include (A) general characterization of high temperature cuprate superconductors, (B) field induced orientation of polycrystal mosaics of high Tc superconductors, (C) non-linearity and frequency response of the magnetic behavior of high Tc superconductors, (D) magnetism and transport properties of conductive organo-metallic polymers based on valence averaged binuclear metal aggregates, (E) low temperature zero field susceptibility and Ho vs T phase diagram behavior of complex flourides of high spin Iron III. This instrumentation is not presently available at Northeastern University. It will be shared by faculty in the Chemistry and Physics departments, and will be made available to other users as needed.