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The elastic behavior of the sol-gel prepared double-layered manganite system La_{1.2}Sr_{1.8-x}Ba_xMn_2O_7 (x = 0.0-0.4) was investigated at 300 K, employing ultrasonic pulse transmission technique at 1 MHz. The values of elastic moduli and acoustic Debye temperature (θ_D) were computed from longitudinal and shear velocities. The measured values were corrected to zero porosity using Hasselman and Fulrath's formula. The elastic constants of the samples, estimated using Modi's heterogeneous metal-mixture rule, were also reported. The variation of elastic moduli with Ba concentration was interpreted in terms of strength of interatomic bonding.
Journal
Year
Volume
Issue
Pages
1687-1694
Physical description
Dates
published
2008-06
received
2007-11-05
(unknown)
2007-12-19
Contributors
author
- Department of Physics, Osmania University, Hyderabad, 500 007, India
- Chitanya Bharathi Institute of Technology, Gandipet, Hyderabad, 500 075, India
author
- Department of Physics, Osmania University, Hyderabad, 500 007, India
author
- Department of Physics, Osmania University, Hyderabad, 500 007, India
author
- Department of Physics, Osmania University, Hyderabad, 500 007, India
author
- Department of Physics, Osmania University, Hyderabad, 500 007, India
author
- Department of Physics, Osmania University, Hyderabad, 500 007, India
author
- Department of Physics, Osmania University, Hyderabad, 500 007, India
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Publication order reference
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bwmeta1.element.bwnjournal-article-appv113n613kz