MLZ is a cooperation between: Neutron Laue Diffraction at MLZ Petr Čermák

History X-Ray in 1912 by Laue [1] Neutron in 1947 by Wollan, Shull and Marney 10 hours exposition) [2] Just indium + film First neutron radiograph Now Image plates CCD detectors Acquisition < 1s Grainau meeting2 [1] ECKERT, M. Ann. Phys. 2012, 524, A [2] E. O. Wollan, C. G. Shull, and M. C. Marney, Phys. Rev. 73 (1948) 527

Principle Grainau meeting3

Neutron Laue in world (not TOF) ILL (Laue-Langevin) Vivaldi, Ladi (Image plate detector, cylindrical geometry) CYCLOPS (16 CCD detectors around sample) OrientExpress (2 CCD detectors, backscatering) ANSTO KOALA (Image plate detector) JOEY (CCD detectors, only backscattering) HFIR IMAGINE (Image plate) HZB FALCON (CCD, back + sweeping detector) MLZ nLAUE Grainau meeting4

nLAUE Neutron camera Grainau meeting5

nLAUE - Features 2x photonic science CCD detector (16 in CYCLOPS) ZnS Scintilator 252x198 cm (2000 x 1598px) Backscattering mode ° angle possible Sample-detector distance adjustable (5-20 cm) Kappa cradle 3D sample rotation Sample table 3D sample transition Grainau meeting6

Possibilities Orientation of the crystals Grainau meeting7 1)Put the sample on the table 2)In NICOS: >>> NewSample(‘MySuperCompound') >>> move(sampleslit, 2) >>> count(120) 3)In Esmeralda: Automatic peak finding Select nodal spot Stepwise orientation around nodals Rotate to given orientation

Possibilities Orientation of the crystals Check of the crystal quality Grainau meeting8 vs.

Possibilities Orientation of the crystals Check of the crystal quality Diffuse scattering, textures Grainau meeting9

Possibilities Orientation of the crystals Check of the crystal quality Strong diffuse scattering Phase transition determination ( K, oven in preparation) Grainau meeting10 [1] P. Čermák, PRB 91, (2015) Ho 2 RhIn 8

Possibilities Orientation of the crystals Check of the crystal quality Strong diffuse scattering Phase transition determination ( K, oven in preparation) Propagation vector determination Grainau meeting11 [1] P. Čermák, PRB 89, (2014) [2] M. Klicpera, PRB 91, (2015) Nd 2 RhIn 8 CeCuAl 3 Magnetic structure unknown Moment 0.28 μ B /Ce 3+ Exposition 2h Just 3 peaks on CYCLOPS  PANDA  D10  solved

Possibilities Orientation of the crystals Check of the crystal quality Strong diffuse scattering Phase transition determination ( K, oven in preparation) Propagation vector determination Full structure determination (  CYCLOPS) Grainau meeting12 36x 1)Take more images ( reflections) 2)Index reflection 3)Orient crystal 4)Refine orientation for all images 5)Integrate all peaks 6)Normalize peaks 7)Jana/Fullprof or 6) Fullprof

Big Thanks Esmeralda Team Luis Fuentes-Montero Juan Rodriguez-Carvajal nLAUE creators Thomas Keller Bjørn Pedersen Grainau meeting13

Thanks for attention Grainau meeting14 see wiki.frm2.tum.de/laue lauesuite.com With nLAUE you can: 1) Orient crystal 2) Check crystal quality 3) Incommensurate phase determination