Element-specific magnetic hysteresis measurements, a new application of circularly polarized soft x-rays

Conference · Tue Sep 07 04:00:00 EDT 1993

OSTI ID:10125726

Lin, H J; Chen, C T; Meigs, G ^[1]; Idzerda, Y U; Chaiken, A; Prinz, G A ^[2]; Ho, G H ^[3]

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1. AT and T Bell Labs., Murray Hill, NJ (United States)
2. Naval Research Lab., Washington, DC (United States)
3. Pennsylvania Univ., Philadelphia, PA (United States). Dept. of Physics

Element-specific magnetic hysteresis measurements on heteromagnetic materials have been achieved by using circularly polarized soft-x- rays. Dramatically different Fe and Co hysteresis curves of Fe/Cu/Co trilayers were obtained by recording the magnetic circular dichroism (MCD) at their respective L{sub 3} white lines as a function of applied magnetic field. The data resolve the complicated hysteresis curves, observed by conventional magnetometry, and determine the individual magnetic moments for the Fe and Co layers. Fine hysteresis features, imperceptible in the conventional curves, were also observed, demonstrating a new application of circularly polarized soft-x-rays in the investigation of magnetic systems.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 10125726
• Report Number(s): UCRL-JC--114794; CONF-930722--59; ON: DE94007122
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104
COBALT
COPPER
HYSTERESIS
IRON
LAYERS
MAGNETIC CIRCULAR DICHROISM
PHYSICAL PROPERTIES
POLARIZED BEAMS
SOFT X RADIATION