Magnetic-field modulation experiments on colossal magnetoresistance samples: first results.
Recently we have observed a small change in the width, sigma, of the Mn-O pair distribution function when a IT magnetic field is applied. To improve our sensitivity to magnetic-field-induced changes, we have developed a magnetic field modulation technique. At each X-ray energy we collect two data points, one with field on and the other with field off: as a result we collect two scans simultaneously. The difference in these two traces provides a measure of the magnetic-field-induced change. The results for the modulation measurements will be compared to the earlier work using static magnetic fields.
Bridges
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Department of Physics, University of California, Santa Cruz 95064, USA. bridges@cats.ucsc.edu
Brown
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Cao
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Anderson
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M
D017610:Calcium Compounds / Q000737:chemistry*; D005583:Fourier Analysis; D008280:Magnetics; D017895:Manganese Compounds / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D013052:Spectrometry, X-Ray Emission / Q000379:methods
D017610:Calcium Compounds; D017895:Manganese Compounds; D010087:Oxides