Correlation Between Magnetovolume and Colossal Magnetoresistance Effects in Terbium Doped La-Sr-Mn-O Perovskite

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2000,（5）
• 所属期刊栏目: Condensed matter
• 页码范围: 373-375
• 页数: 3页
• 语种: 英文

摘要

(La0.67 Tb0.33 )2/3Sr1/3MnO3 has been studied in order to probe mechanisms responsible for the giant magnetoresistance ratios and the lattice effect in this kind of compound. The experiment has shown a strong connection between the magnetotransport and magnetovolume properties. An applied magnetic field not only gives rise to a large negative magnetoresistance (-900%) but also produces two different magnetovolume effects which reflect two different magnetostriction mechanisms in the compound.