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The coexistence and competition of low-field magnetoresistance and colossal magnetoresistance in polycrystalline La0.49Sr0.51(Mn1−xNbx)O3

✍ Scribed by Deliang Zhu; Qiqing Shu; Wenjun Liu; Xiaocui Ma; Peijiang Cao; S.M. Bhagat; S.E. Lofland; I.O. Troyanchuk


Book ID
113782120
Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
329 KB
Volume
103
Category
Article
ISSN
0254-0584

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Low-field colossal constant magnetoresis
✍ S.L. Yuan; J. Tang; Z.C. Xia; L. Liu; L.F. Zhao; W. Chen; G.H. Zhang; L.J. Zhang 📂 Article 📅 2003 🏛 Elsevier Science 🌐 English ⚖ 141 KB

It is reported here that colossal constant magnetoresistance (CCMR) over the whole temperature range below the insulatormetal transition can be realized at low magnetic fields through doping 4% Cu in the sol-gel prepared La 2/3 Ca 1/3 MnO 3 sample sintered at 950 8C. The magnetoresistance defined as