Effect of substitution of Cr on magnetic behavior and electrical transport in bi-layered manganite La1.2Sr1.5Ca0.3Mn2O7
β Scribed by Arpita Saxena; Anjali Krishnamurthy; Bipin K. Srivastava; A.K. Nigam
- Book ID
- 113914202
- Publisher
- Elsevier Science
- Year
- 2011
- Tongue
- English
- Weight
- 666 KB
- Volume
- 13
- Category
- Article
- ISSN
- 1293-2558
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The processing, microstructures and properties of La 0:7 Sr 0:3 Mn 12x Zn x O 3 perovskite manganite, with x ΒΌ 0; 0.1, 0.2, and 0.3 have been investigated. X-ray diffraction, scanning electron microscopy (SEM) and other characterisation methods were used to study the relations of microstructure and
The specific heat Γ°CΓ of bi-layered manganites La 2 2 2x Sr 1 ΓΎ 2x Mn 2 O 7 (x ΒΌ 0:3 and 0.5) is investigated for the ground state of low temperature excitations. A T 3=2 dependent term in the low temperature specific heat (LTSH) is identified at zero magnetic field and suppressed by magnetic fields