| Literature DB >> 14995182 |
Dinah R Parker1, Mark A Green, Steven T Bramwell, Andrew S Wills, Jason S Gardner, Dan A Neumann.
Abstract
We present a new class of colossal magnetoresistance materials based on a series of frustrated spinels. The spin glass-like compound Zn0.95Cu0.05Cr2Se4, shows a field-induced transition to a ferromagnetic, which is associated with a highly unusual negative magnetoresistance effect (MR > 80%) in low magnetic field. At higher temperatures there is an unprecedented crossover to positive magnetoresistance (MR > 50%).Entities:
Year: 2004 PMID： 14995182 DOI： 10.1021/ja036965a
Source DB: PubMed Journal: J Am Chem Soc ISSN： 0002-7863 Impact factor: 15.419