Fig. 1
From: Room temperature giant magnetostriction in single-crystal nickel nanowires
a Experimental setup of coherent X-ray diffraction measurements. A monochromatic X-ray beam with an energy of 8.9 keV focused by Kirkpatrick-Baez mirrors illuminates the Ni nanowire. Coherent X-ray diffraction patterns were collected by rocking the nanowire through the 111 and 002 Bragg peaks in increments of 0.005°, with a two-dimensional pixel array detector placed 0.5 m from the sample. The applied magnetic field H is normal to the [001] direction of the nanowire and at an arbitrary angle δ with the [100] crystal axis. b Plot of the magnetostriction coefficients λ100 and λ111 of the Ni NW as a function of the applied magnetic field. Due to the uncertainty in the exact angles of the saturation magnetization with respect to the crystal axes, we provide a range of values for the λ111 coefficient, located between the top red and bottom blue curves
