(Color online) Experimental setup at CLS 10ID-1. (a) Configuration of the incident x-ray beam, sample plane, and photon detector; equipment setup for photon counter and function generator. (b) The wave function, trigger signal, and configurations for the 2 counting gates. See the text for details.
The 5 μm × 12 μm element, static domain structure, at zero field, in the horizontal configuration. Here, CL denotes circular-left polarization, and CR denotes circular-right polarization; the XMCD image is on the right.
(Color online) The 15 nm Permalloy ellipse static hysteresis loops; horizontal configuration. The bar equals 1 μm. (a) Field strengths from left to right are 3, 5.4, 7.2, 7.8, and 8.4 Oe; the opposite direction in the upper and lower panels. (b) Hysteresis loops by converting relative areas into normalized magnetization; the red curve (dots) denotes the first cycle; the blue curve (triangles) denotes the second cycle. (c) Different domain structures (diamond pattern) in the second cycle. Upper panel: 0 Oe; lower panel: −5.4 Oe.
Dynamic images; fields are estimated to 50% precision. (a) Bilayer 5 μm × 24 μm element; applied field 7 Oe along the long axis, fully switched. Upper panel: dynamic images, taken at 500 Hz; lower panel: static. (b) Horizontal configuration for the 15 nm × 5 μm × 12 μm element; applied field frequency is 500 Hz. As the field amplitude goes from 2 to 4 Oe, the switched area in the element grows. (c) Horizontal configuration for the single layer element at 2 kHz. The first column (field amplitude: 3.5 Oe) shows an example of no contrast due to the stochastic domain motion; the second column (field amplitude: 21 Oe) shows the contrast for the fully switched element.
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