U.S.-Argentina Cooperative Research: Magnetic Properties of Some Colossal Magnetoresistance Systems

9802967 Oseroff美洲计划奖将资助圣地亚哥州立大学（SDSU）的Saul Oseroff博士和阿根廷巴里洛切原子中心（CAB）的Maria T. Causa博士之间为期三年的合作研究项目，研究一些巨磁阻系统的磁性。目的是解释电子自旋共振（ESR）线宽的起源和产生ESR线的实体。同时，了解它们与在这些材料中测量的巨大磁阻之间的关系。ESR是一种探测局部晶体和磁场效应的强大技术，可以在理解这些系统的磁性行为方面发挥重要作用。钙钛矿锰中巨大磁阻响应的发现，现在被称为巨磁阻（CMR），重新引起了人们对这些系统的关注。这类化合物中CMR的研究对于寻找解释其磁输运性质的模型以及它们作为磁传感器的可能应用都是重要的。这项研究有望为这些材料的物理学提供新的见解，并可能导致重要和新颖的技术应用。＊＊＊

9802967 Oseroff This Americas Program award will fund a three-year cooperative research project between Dr. Saul Oseroff, San Diego State University (SDSU), and Dr. Maria T. Causa, Centro Atomico Bariloche (CAB), Argentina, on a study of the magnetic properties of some colossal magneto resistance systems. The purpose is to explain the origin of Electron Spin Resonance (ESR) linewidth and the entities that give rise to the ESR line. Also, to learn how they are related to the huge magnetoresistance measured in these materials. ESR is a powerful technique to probe local crystal and magnetic field effects that could play an important role in understanding the magnetic behavior of these systems. The discovery of a huge magnetoresistive response, now termed colossal magnetoresistance (CMR), in perovskite manganate has renewed attention to these systems. The study of CMR in this class of compounds is important for both the search for a model to explain their magneto transport properties and for their possible application as magnetic sensors. The research is expected to provide new insight into the physics of these materials, and could result in important and novel technological applications. ***