Open AccessHard X‐ray polarizer to enable simultaneous three‐dimensional nanoscale imaging of magnetic structure and lattice strain
Author(s) -
Logan Jonathan,
Harder Ross,
Li Luxi,
Haskel Daniel,
Chen Pice,
Winarski Robert,
Fuesz Peter,
Schlagel Deborah,
Vine David,
Benson Christa,
McNulty Ian
Publication year - 2016
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s1600577516009632
Subject(s) - dichroic glass , coherent diffraction imaging , optics , materials science , polarizer , bragg's law , synchrotron radiation , diffraction , polarization (electrochemistry) , physics , phase retrieval , birefringence , chemistry , quantum mechanics , fourier transform
Recent progress in the development of dichroic Bragg coherent diffractive imaging, a new technique for simultaneous three‐dimensional imaging of strain and magnetization at the nanoscale, is reported. This progress includes the installation of a diamond X‐ray phase retarder at beamline 34‐ID‐C of the Advanced Photon Source. The performance of the phase retarder for tuning X‐ray polarization is demonstrated with temperature‐dependent X‐ray magnetic circular dichroism measurements on a gadolinium foil in transmission and on a Gd 5 Si 2 Ge 2 crystal in diffraction geometry with a partially coherent, focused X‐ray beam. Feasibility tests for dichroic Bragg coherent diffractive imaging are presented. These tests include (1) using conventional Bragg coherent diffractive imaging to determine whether the phase retarder introduces aberrations using a nonmagnetic gold nanocrystal as a control sample, and (2) collecting coherent diffraction patterns of a magnetic Gd 5 Si 2 Ge 2 nanocrystal with left‐ and right‐circularly polarized X‐rays. Future applications of dichroic Bragg coherent diffractive imaging for the correlation of strain and lattice defects with magnetic ordering and inhomogeneities are considered.