Try contact the following company. They have different
kinds of SOI wafers.  (Web site:  www.soitec.com )

SOITEC S.A.
Parc Technologique des Fontaines
38190 Bernin
France
Phone: 33 4 76 92 75 00
Fax: 33 4 76 92 75 01
e-mail: [email protected]

or

SOITEC USA Inc.
2 Centennial Drive
Peabody, MA 01960 USA
 Phone: (978)531-2222
Fax: (978)531-2758
e-mail: [email protected]

*********************************************************
Dr. Kholdoun TORKI       CMP-TIMA  46, Av. Felix Viallet,
[email protected]            38031 GRENOBLE, France.
[email protected]                http://tima-cmp.imag.fr
Fax : +33 4 76473814                 Tel : +33 4 76574763
*********************************************************

alex wrote:

> Hi,
>
> I am looking for SOI wafers (4" diameter) with a rather thick oxide
> layer (1 micron) and 1.5 micron SOI layer, with tight tolerances (5%).
> Any advice on where I could get these is appreciated.
>
> --
> ********************************************************
> Alexander Hvlke, Postdoctoral Associate
>  Massachusetts Institute of Technology
>  Microsystems Technology Laboratory
>  60 Vassar Street                    Phone: 617-253-0724
>  Room 39-663                         Fax: 617-253-9606
>  Cambridge, MA 02139                 [email protected]
> ********************************************************
>