title: Magnetic-field modulation experiments on colossal magnetoresistance samples: first results.
abstract: 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.
authors.affiliation: Department of Physics, University of California, Santa Cruz 95064, USA. bridges@cats.ucsc.edu
authors.forename: F
authors.initials: F
authors.lastname: Bridges
authors.forename: G
authors.initials: G
authors.lastname: Brown
authors.forename: D
authors.initials: D
authors.lastname: Cao
authors.forename: M
authors.initials: M
authors.lastname: Anderson
mesh_terms: 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
chemical_list: D017610:Calcium Compounds; D017895:Manganese Compounds; D010087:Oxides