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(Color online) (a) STM image of . Doubled spot defects and some schematic insets are shown in the right panel. (b) Magnetic hysteresis loops for 2, 6, and .
(Color online) STM images of at ambient temperature (a), (b), and (c). Ratio of dark area for at different temperatures is shown in (d).
Magnetic hysteresis loops for 6 and at different temperatures. Hysteresis behavior occurs in both the longitudinal and polar configurations.
(Color online) LEED pattern (a) and STM image (c) of at . (b) A schematic figure of LEED spots for and structures. The calculated angle between the reciprocal unit vectors of and the structures is about and the ratio of their lengths is 2.65. (d) Magnetic hysteresis loops for . Hysteresis behavior occurs only in the longitudinal configuration.
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