https://www.remagx.org/wiki/dokuwiki/ 2026-04-20T07:58:00+00:00 https://www.remagx.org/wiki/dokuwiki/ https://www.remagx.org/wiki/dokuwiki/lib/tpl/dokuwiki/images/favicon.ico text/html 2013-06-20T02:31:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:adaptive_layer_segmentation&rev=1371695468&do=diff Roughness Models The roughness model assumes a continuous transition (error function) of the optical constants between two layers and can be altered by the roughness parameter σ. Two modes implemented to calculate the spectra. * Nevot&Croce * text/html 2015-11-30T10:45:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:element_specific_model&rev=1448880347&do=diff Element Specific Modelling The standard modelling of thin films is done in the layer table and consists of a list of layers of different compound materials. A compound here is defined as a group of elements which have a homogeneous density inside the layer (e. g. crystals). The optical constants can be achieved by a linear combination of element-specific scattering factors (e. g. off-resonant Chantler-tables). The main parameters for each layer are the thickness, interface roughnesses and the … text/html 2014-05-09T18:52:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:faq&rev=1399661537&do=diff I am getting crazy. Nothing works and ReMagX is always crashing Keep cool. The program is work in progress and there will be always bugs. Write a brief bug report and sent it to the author of the program. If possible sent the .all file too. I cannot import my data. I get some errors about wrong lines or wrong import format. But everything seems alright text/html 2013-04-03T22:21:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:file_formats&rev=1365027664&do=diff File Formats All numbers must have a dot “.” as a decimal seperator. .db files The .db files define the optical constants <m>n=1-delta+i beta</m> for an optical isotropic material. Each line must have 3 columns with the order * energy in eV text/html 2015-09-09T08:56:50+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:fit&rev=1441789010&do=diff Defined fit variables for compound mode Variable initial lower boundary Initial upper boundary thickness 0.8*thickness 1.2*thickness delta -0.1 0.1 beta 0. 0.1 sigma 0. text/html 2013-11-28T11:45:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:fittey&rev=1385639141&do=diff Documentation for FitTEY The program FitTEY is a toolbox to fit the total electron yield (TEY) or calculated spectra to off-resonant tables (optical constants delta, beta or scattering factors f1, f2) and to do Kramers-Kronig calculations in one step. Furthermore it can create new optical constants for compounds. text/html 2013-04-03T22:21:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:fitting_maps&rev=1365027665&do=diff Sample Characterization PNO: PrNiO3 LSAT: 0.29(LaAlO3): 0.35(Sr2AlTaO6) (3.8735 Angstrom unit cell) Interesting peaks: substrate: La M5: 836 eV La M4: 853 eV film: Ni L3: 852.7 eV Ni L2: 870.0 eV Optical Constants The TEY signals were fitted to chantler tables by the formula text/html 2013-04-03T22:21:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:importing_measurement_data&rev=1365027665&do=diff Datasets In ReMagX datasets contains the experimental data that can be viewed and fitted. ---------- File format To load experimental results the data must be available in form of an ASCII text file with a column like organization. An example might look like: text/html 2015-11-12T14:54:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:layer_input_talbe&rev=1447340048&do=diff * The index of the layer. This index is used to reference its parameters in the script, e.g thickness[2] for the thickness value of layer 2. * Thickness of the layer in Ångström * Filename of the optical constants database files without ending (here Co.db, Cu.db, and vacuum.db). Files have to be in the same directory as the .all file. text/html 2013-06-20T02:26:10+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:magnetization&rev=1371695170&do=diff Magneto-optics The magneto-optical part is optional. To enable this part do the following. * In the magneto-optics sheet click on “add magnetization”. * give the magnetization direction of all layers and click on apply to all layers. This can be changed on a per layer base in the Properties dialog for each layer. text/html 2015-09-09T09:52:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:main&rev=1441792377&do=diff Tutorials * Tutorial 1 (Simulation and Fitting) * Tutorial 2 (Magnetic profile fitting) * Tutorial 3 (Calculating Bragg Peaks) ReMagX Documentation * Overview and Startscreen * Layer Input Table * Simulation modes * Optical Constants * Polarization * Preferences * Post Modifications * Adaptive Layer Segmentation * Magnetization * Fit * Script * Script Examples * Datasets & Import of Datasets * Element Specific Models * File Formats * Program Flow * … text/html 2013-04-03T22:21:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:optical_constants&rev=1365027664&do=diff Requested File Matrix The handling of the optical constants is a very challenging task. Different modes and algorithm requires different files. For more information go to the File Formats section. Cacheing and automatic updating of the optical constants text/html 2013-04-03T22:21:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:overview_and_startscreen&rev=1365027664&do=diff red: Layer Input Table - contains all parameters for the individual layers green: Plot Window - graph window for plotting curves blue: Settings Tabs - control of the simulation, experiment, fit, etc. parameters yellow: start simulation text/html 2015-03-01T11:42:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:polarization&rev=1425210175&do=diff Polarization The polarization tab defines the type of incident X-ray and is an experimental parameter. It is defined as common as possible as two complex numbers defining the real part and imaginary part (amplitude and phase as complex number) of the electric field in sigma and pi direction of the light. (Look in text/html 2013-04-03T22:21:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:post_modifications&rev=1365027664&do=diff One data point for one film can be characterized by the four numbers qz, energy, intensity and type of polarization. Dependent on the type of measurement different modifications could be helpful to analyze the data. The program is capable to do this modifications automatically. text/html 2014-05-09T18:34:09+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:program_flow&rev=1399660449&do=diff Program Flow In the following the program flow of some important functions is sketched Reflectivity * Read current state from the graphical user interface and check values. * if “Set optical constants automatically is turned on” * Read .db or .e files of each layer. If no file found display error message. text/html 2014-10-08T17:16:48+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:script&rev=1412788608&do=diff The script window uses the scripting language LUA (see: <http://www.lua.org/> or <http://de.wikipedia.org/wiki/Lua>) and therefore provides a large function pool (mathematical functions, control structures etc.). The script in the register “BeforeCalculation” is executed when * The script is executed manually. Either in the menu in the main window or the execute button in the script window. The altered variables are written back to the graphical user interface. Error Messages and Debug Messa… text/html 2013-04-03T22:21:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:script_examples&rev=1365027664&do=diff Add Lorentzian to the refractive index -- energy is a predefined variable e = energy -- Ni L2 alpha1 = 85000.2; beta1 = 2.97885; e01 = 870.5; -- Ni L3 alpha2 = 26162.2; beta2 = 0.853558; e02 = 852.216; -- calculate classical lorentzians del1 = alpha1 * (e*e - e01*e01) / ((e01*e01 - e*e)*(e01*e01 - e*e) + beta1*beta1 * e*e); bet1 = alpha1 * beta1*e / ((e01*e01 - e*e)*(e01*e01 - e*e) + beta1*beta1 * e*e); del2 = alpha2 * (e*e -… text/html 2013-04-03T22:21:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:settings&rev=1365027665&do=diff Algorithm roughness approximation Precision Scattering Type Calculates either the Intensity from reflection (outgoing beam from top layer) or the Intensity from transmission (outgoing beam from substrate). To calculate the appropriate transmission in a thin film foil the substrate should be a vacuum layer. text/html 2015-09-09T08:59:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:simulation_modes&rev=1441789155&do=diff Simulation algorithms Overview of the different algorithms implemented Parratt * For optical isotropic material * Very fast * very stable algorithm * can calculate only sigma- and pi-light. Circluar polarization modelled as average of sigma- and pi-light. text/html 2013-04-03T22:21:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:terms_and_definitions&rev=1365027665&do=diff <m>vec{E}=sigma .(matrix{3}{1}{1 0 0}) + pi . (matrix{3}{1}{0 {cos alpha} {sin alpha}})</m> text/html 2015-09-09T09:43:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:tutorial&rev=1441791835&do=diff Tutorial 1 This tutorial is a step by step instruction for the most basic functionality of ReMagX - structural fits of reflectivity data. It should give you a comphrehensive introduction and tips on how to use ReMagX. The files for this tutorial can be downloaded in the download section of this webpage. text/html 2015-09-09T09:52:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:tutorial2&rev=1441792331&do=diff Tutorial 2 TODO text/html 2015-09-09T09:51:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.remagx.org/wiki/dokuwiki/doku.php?id=documentation:tutorial3&rev=1441792300&do=diff Tutorial 3 This tutorial is a step by step instruction for the usage of the multilayer feature and simulating structural Bragg peaks of thin films with correct optical constants. The files for this tutorial can be downloaded in the download section of this website.