Magnetic and Calorimetric Studies on the New Class of Layered III-IV Diluted Magnetic Semiconductors

9972196 Pekarek该项目涉及新的分层III-VI稀磁半导体（DMS）的磁性和量热性质。 III-VI族半导体以其显著的非线性光学特性而闻名。对GaMnSe和GaMnS晶体的初步磁性测量揭示了与先前在大量研究的II-VI和III-V DMS材料中观察到的行为显著不同的行为。 使III-VI DMS独特的两个关键特征是它们的二维层状结构（通过层之间的货车范德华键合保持在一起）和相邻过渡金属离子直接键合的可能性。 这项研究计划的目标是为解开一些观察到的新的磁效应提供关键信息，并启动对III-VI族半导体宿主中其他过渡金属离子的研究。 这项研究涉及本科生以及当地的高中教师，将影响技术培训的本科生的质量和高中学生进入科学或技术领域的动机。 本项目涉及一类具有潜在光电子应用的新材料。 本科生和当地的高中教师将帮助进行测量，使用最先进的设施在国家高磁场实验室在塔拉哈西，佛罗里达。他们将学习一些重要的实验技术，同时研究一个新的和潜在的重要类别的磁性半导体。

9972196PekarekThis project deals with the magnetic and calorimetric properties of the new class of layered III-VI Diluted Magnetic Semiconductors (DMS). The III-VI semiconductors are known for their remarkable nonlinear optical properties. Preliminary magnetic measurements on GaMnSe and GaMnS crystals have revealed behavior strikingly different from that observed previously in the heavily studied II-VI and III-V DMS materials. Two key features that make the III-VI DMS unique is their two-dimensional layered structure (held together by van der Waals bonding between layers) and the potential for direct bonding of neighboring transition metal ions. The goal of this research program is to provide key information for unraveling some of the observed novel magnetic effects and to initiate an investigation of other transition metal ions in the III-VI semiconductor hosts. The research involves undergraduate students as well as a local high school teacher and will impact both the quality of technically trained undergraduates and the motivation of students at the high school level to enter scientific or technical fields. %%%This project deals with a new class of materials with potential photoelectronic applications. Undergraduate students and a local high school teacher will help make measurements using the state-of-the-art facilities at the National High Magnetic Field Laboratory in Tallahassee, Florida. They will learn a number of important experimental techniques while investigating a new and potentially important class of magnetic semiconductors.***