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. 2015 Jun 8;6:7377. doi: 10.1038/ncomms8377

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(a–c) Diffraction pattern of the (118)_T lattice Bragg peak at temperatures in the vicinity of the structural (T_s) and magnetic (T_N) phase transition. (d) Line cut on the area detector (dashed line in a) slowly cooling from a nominal temperature of T=140 to 137 K. The tetragonal (118)_T Bragg peak splits first at T_s, due to the transition to the orthorhombic crystal structure, and then further at T_N as a result of the onset of SDW order.