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- Title
One-Step Atmospheric Pressure Synthesis of the Ground State of Fe Based LaFeAsO<sub>1− δ </sub>.
- Authors
Awana, V.; Vajpayee, Arpita; Mudgel, Monika; Kumar, Anuj; Meena, R.; Tripathi, Rahul; Kumar, Shiva; Kotnala, R.; Kishan, Hari
- Abstract
We report an easy and versatile one-step synthesis route for a newly discovered Fe based LaFeAsO1− δ compound with 0.0≤ δ≤0.15. Instead of widely used high-pressure-high-temperature ( HPHT) synthesis, we applied the normal atmosphere solid-state reaction route. The stoichiometric mixtures of Fe, La2O3, La, and As in ratio LaFeAsO1− δ with 0.0≤ δ≤0.15 are sealed in an evacuated quartz tube and further heated at 500, 850, and 1,100 °C in Ar for 12, 12, and 33 hours, respectively, in a single step. The resulting compounds are single phase LaFeAsO crystallized in tetragonal P4/ nmm structure. These samples showed the ground state spin density wave ( SDW) like metallic behavior below around 150 K. In conclusion, the ground state (non-superconducting) of newly discovered Fe based superconductor is synthesized via an easy one-step solid-state reaction route.
- Publication
Journal of Superconductivity & Novel Magnetism, 2008, Vol 21, Issue 3, p167
- ISSN
1557-1939
- Publication type
Letter
- DOI
10.1007/s10948-008-0320-5