Open atmosphere synthesis and wide range colossal magnetoresistance in La0.7Sr0.3−xHgxMnO3 (0≤x≤0.2) system
✍ Scribed by Vilas Shelke; Subhash Khatarkar; Rajiv Rawat; R.K. Singh
- Book ID
- 108269446
- Publisher
- Elsevier Science
- Year
- 2005
- Tongue
- English
- Weight
- 156 KB
- Volume
- 135
- Category
- Article
- ISSN
- 0038-1098
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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
The synthesis, structure, and physical properties of \(\mathrm{La}_{3-x}\) \(M_{x} \mathrm{Ni}_{2} \mathrm{O}_{7-\delta}\), with \(M=\mathrm{Ca}^{2+}, \mathrm{Sr}^{2+}\), or \(\mathrm{Ba}^{2+}\), and \(0<x \leq 0.075\), were investigated. These compounds were prepared by a precursor method with tetr