Submitted on: 19 October 2007.
Revised on: 03 November 2007.
Accepted on: 12 November 2007.
Materials Research Express
Submitted on: 23 March 2022.
Revised on: 05 April 2022.
Accepted on: 15 April 2022.
Materials Research Express---IOP PUBLISHING LTD
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Submitted on: 31 January 2010.
Revised on: 28 February 2010.
Accepted on: 18 March 2010.
Materials Research Express
Submitted on: 08 May 2002.
Revised on: 20 June 2002.
Accepted on: 11 July 2002.
Materials Research Express---IOP PUBLISHING LTD
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