Search found 16 matches
- Wed Nov 06, 2024 3:04 am
- Forum: General forum
- Topic: three-dimensional magnetization
- Replies: 1
- Views: 7858
three-dimensional magnetization
Hello. I would like to calculate magnetization with CURRY for various orientations of the magnetic field. From the documentation, I guess I need to use Exp.SampleFrame command. So I generated simple loop for three different Euler angles Temp=2; %K Field=500; %mT npoints=10; %number of point for PI s...
- Thu Oct 31, 2024 11:44 am
- Forum: General forum
- Topic: EPR of superparamagnetic nanoparticles
- Replies: 1
- Views: 7866
EPR of superparamagnetic nanoparticles
Hello,
Recently, I have measured X-band EPR spectra of iron oxide superparamagnetic nanoparticles above blocking temperature.
Is it possible to use EasySpin to analyze such spectra?
Thank you very much for any hint
Radovan
- Wed Jul 24, 2024 10:38 am
- Forum: General forum
- Topic: Import g and D tensors from CASSCF calculations
- Replies: 2
- Views: 7808
- Mon Jul 22, 2024 11:45 am
- Forum: General forum
- Topic: Restricting optimized parameters
- Replies: 1
- Views: 4997
Restricting optimized parameters
Hello I would like to fit isotropic exchange in trinuclear system, defined as Sys.S = [3/2 3/2 3/2]; Sys.J = [J12 J13 J23]; and the question is whether it is possible to restrict J13=J23 relationship in ESFIT? If yes, I would have only two varying parameters, J12 and J13 (J23=J13)... Thank you for y...
- Mon Jul 22, 2024 3:10 am
- Forum: General forum
- Topic: Import g and D tensors from CASSCF calculations
- Replies: 2
- Views: 7808
Import g and D tensors from CASSCF calculations
Hello I am dealing with polynuclear Co complex, and I have at my disposal results from CASSCF/NEVPT2 calculations in ORCA 5.0 for each Co(II) ion. Now, I would like to import/load, D-tensors and g-tensors from the outputs and evaluate impact of isotropic exchange among spin centers. For g-tensors, O...
- Tue Jun 06, 2023 1:19 am
- Forum: General forum
- Topic: Curry / fitting magnetic data
- Replies: 1
- Views: 14972
Curry / fitting magnetic data
Hello I am using Easyspin 5.2.35. I would like to fit temperature and field-dependent data with CURRY. However, my field-dependent data are not measured at the same fields for given temperatures. To better explain, I do NOT have the data set as it is expected T(K) Magnetization B(mT) 2 value 1000 2 ...
- Tue Jun 08, 2021 11:17 pm
- Forum: General forum
- Topic: defining dimer with on centre comprising orbital angular momentum
- Replies: 11
- Views: 7650
Re: defining dimer with on centre comprising orbital angular momentum
The Hamiltonian for V(IV)-Co(II) system should be H = J(S1 S2)+ lsoc(S2 L2)+mB B (gS1+gS2-L2) where 1=V, 2=Co and there is the isotropic exchange between spins, spin-orbit coupling between S2 and L2 and Zeeman term. Next level is to include also CF terms for L2. Similar system can be operable also f...
- Tue Jun 08, 2021 11:37 am
- Forum: General forum
- Topic: defining dimer with on centre comprising orbital angular momentum
- Replies: 11
- Views: 7650
Re: defining dimer with on centre comprising orbital angular momentum
The Hamiltonian should be e.g. for V(IV)-Co(II) system, where V(IV) has S=1/2 and L=0, octahedral Co(II) is described by Griffith-Figgis Hamiltonian, S=3/2 and L=1. However, when one L is zero, muMB is negative, as posted before. If I change system to Co(II)-Co(II) like this clear, clc, clf; close a...
- Tue Jun 08, 2021 7:53 am
- Forum: General forum
- Topic: defining dimer with on centre comprising orbital angular momentum
- Replies: 11
- Views: 7650
Re: defining dimer with on centre comprising orbital angular momentum
Dear Stefan thank you very much for the updates. However, I guess I have found some bug regarding the calculation of magnetic moment - muBM for dimer with L. Here is input: clear, clc, clf; close all; cm = 100*clight/1e6; % Conversion constant from cm-1 to MHz %Co-V Sys.S = [3/2 1/2]; Sys.L = [1 0];...
- Fri May 28, 2021 5:21 am
- Forum: General forum
- Topic: defining dimer with on centre comprising orbital angular momentum
- Replies: 11
- Views: 7650
Re: defining dimer with on centre comprising orbital angular momentum
Hello I have found a discrepancy in meff for Yb3+ ion. cm = 100*clight/1e6; % Conversion constant from cm-1 to MHz %Yb3+ LS Sys.S = [1/2]; Sys.L = [3]; Sys.orf = [1.0]; Sys.soc = [2910]*cm; Sys.g = [2.0023]; Sys.CF2 = cm*[0 0 0 0 0]; Opt.Output = 'mueff'; Opt.Units = 'SI'; Exp.Temperature = 300; Exp...