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X-ray diffraction studies using CuK radiation with Ni filter confirmed the single-phase spinel structure for all the samples.
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kunpeng1782: ½ð±Ò+10, MN-EPI+1, ллÄúµÄ»Ø´ð 2013-07-28 15:52:41
fan_xmz: ½ð±Ò+5, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2013-07-28 19:01:17
The K-absorption-edge (K-to-continuum threshold) for nickel is at 1.488 Angstrom. As a result, nickel absorbs Cu Kb radiation much more strongly than it absorbs Cu Ka radiation. A Ni foil filter is often used to attenuate Cu Kb radiation, and is included in our tube housing.  You will still see double peaks due to Ka1 and Ka2   at least at large scattering angles.

http://xrd-cmmp.blogspot.tw/2011 ... ffect-of-steps.html
when running continuous scans, the step size needs to be chosen according to the peak FWHM for effective peak position determination-- but keep in mind that step size impacts net intensity.
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fan_xmz

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2Â¥: Originally posted by refnew at 2013-07-28 10:08:45
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3Â¥: Originally posted by fan_xmz at 2013-07-28 10:15:17
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