科研之友
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摘要
By controlling oxygen pressure, ferric oxide with different oxidation state can be formed by pulsed laser deposition (PLD). SEM was used to study the surface topography, XPS to study the oxygen ratio, and SQUID to study the magnetic property of these obtained thin films. Thin films grew under low oxygen pressure maintain good magnetic property, and magnetic property can be adjustable with increasing oxygen pressure. This work showed a clear relationship between process (oxygen pressure), structure (stoichiometry), and (magnetic) property, which demonstrated the modified PLD can offer a way to expedite the experiment procedure and obtain materials structure-property relationship.
