Awana, V. P. S. and Vajpayee, Arpita and Mudgel, Monika and Kumar, Anuj and Meena, R. S. and Tripathi, Rahul and Kumar, Shiva and Kotnala, R. K. and Kishan, Hari (2008) One-Step Atmospheric Pressure Synthesis of the Ground State of Fe based LaFeAsO(1-delta). Journal of Superconductivity and Novel Magnetism , 21 (3). 167-169 . ISSN 1557-1947

[img] PDF - Published Version
Restricted to Registered users only

Download (462Kb) | Request a copy


We report an easy and versatile one-step synthesis route for a newly discovered Fe based LaFeAsO(1-delta) compound with 0.0 <= delta <= 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, La(2)O(3), La, and As in ratio LaFeAsO(1-delta) with 0.0 <= delta <= 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.

Item Type: Article
Additional Information: Copyright for this article belongs to M/s Springer Verlag .
Subjects: Physics
Depositing User: Ms Neetu Chandra
Date Deposited: 02 Sep 2015 06:31
Last Modified: 02 Sep 2015 06:31

Actions (login required)

View Item View Item