Education Prize Logo
Science SPORE Prize
November 2011

NSF Logo
The Open Source Physics Project is supported by NSF DUE-0442581.

Computer Program Detail Page

Item Picture
written by Larry Engelhardt, Chad Garland, Cameron Rainey, and Austin Freeman
The Quantum Magnetism Analysis Model was created to help students as well as researchers who are studying magnetism.  It provides a very simple interface for defining (theoretical) quantum spin models; sliders are automatically created to vary the parameters in the models; and several plots are automatically created to visualize the results.  Within the program, several measured (experimental) data sets are included for a variety of real molecules.  These provide the opportunity to experience the modeling process by varying the parameters in the model and exploring how the simulated results compare to the measured data.

The interactions between neighboring quantum magnetic moments ("spins") are modeled using the Heisenberg model; calculations are carried out by numerically diagonalizing the matrix representation of the Heisenberg Hamiltonian; and plots display the energy spectrum, magnetization, and magnetic susceptibility as a function of temperature and magnetic field.

This simulation is a "Fully Integrated Tool for Magnetic Analysis in Research & Teaching," so we also refer to it with the acronym "FIT-MART".  FIT-MART was developed using the Easy Java Simulations (EJS) modeling tool.  It is distributed as a ready-to-run (compiled) Java archive.  Double clicking ejs_fitmart.jar file will run the package if Java is installed.  In future versions of this simulation, curricular materials will be included to help students to learn about magnetism, and automated fitting routines will be included to help researchers quickly and easily model experimental data.


FIT-MART was developed using the Easy Java Simulations (EJS) modeling tool.  It is distributed as a ready-to-run (compiled) Java archive.  Double clicking ejs_fitmart.jar file will run the package if Java is installed.

Please note that this resource requires at least version 1.6 of Java.
View the supplemental document attached to this resource
View the source code document attached to this resource
Subjects Levels Resource Types
Quantum Physics
- General
- Multi-particle Systems
- Spin and Finite Dimensional Systems
- Upper Undergraduate
- Graduate/Professional
- Lower Undergraduate
- Collection
- Instructional Material
= Curriculum support
= Interactive Simulation
Intended Users Formats Ratings
- Learners
- Professional/Practitioners
- Educators
- application/java
  • Currently 4.0/5

Rated 4.0 stars by 1 person

Want to rate this material?
Login here!


Access Rights:
Free access
License:
This material is released under a GNU General Public License Version 3 license. Additional information is available.
Rights Holder:
Larry Englehardt
Record Cloner:
Metadata instance created July 27, 2012 by Wolfgang Christian
Record Updated:
June 19, 2014 by Wolfgang Christian
Last Update
when Cataloged:
July 27, 2012

Spin Systems - Multiparticle

Author: MuckrakerW M
Posted: June 25, 2015 at 1:14AM

I found this simulator just what I needed to better understand spin-1/2, spin-0 and spin-1 particles. Since photons theoretically have zero mass the X parameters/fields in Tesla are usually set to zero. I'm not sure if the Lande g factor or gyromagnetic ratio g or the Bohr magneton apply to photons, bosons, since they carry no charge. Anyway I set these parameters to zero as well.

On the other hand all these parameters do play a major role in defining the electron. Especially the Bohr magneton for the direct behavior of the electron in a magnetic field. In effect, this is a great simulator for learning to understand the properties of charged particles fundamentally as well as bond energies and particle interactions.

If only there was more practical information on the use of the data and the simulator itself. That is, more on learning to read the plots more scientifically. Otherwise this simulator is awesome.

Thanks guys for a great quantum mechanical tool to help me with my research....

» reply

Post a new comment on this item
ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
L. Engelhardt, C. Garland, C. Rainey, and A. Freeman, Computer Program QUANTUM MAGNETISM ANALYSIS MODEL, Version 1.0 (2012), WWW Document, (http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12308&DocID=3050).
AJP/PRST-PER
L. Engelhardt, C. Garland, C. Rainey, and A. Freeman, Computer Program QUANTUM MAGNETISM ANALYSIS MODEL, Version 1.0 (2012), <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12308&DocID=3050>.
APA Format
Engelhardt, L., Garland, C., Rainey, C., & Freeman, A. (2012). Quantum Magnetism Analysis Model (Version 1.0) [Computer software]. Retrieved July 2, 2015, from http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12308&DocID=3050
Chicago Format
Engelhardt, L, C. Garland, C. Rainey, and A. Freeman. "Quantum Magnetism Analysis Model." Version 1.0. http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12308&DocID=3050 (accessed 2 July 2015).
MLA Format
Engelhardt, Larry, Chad Garland, Cameron Rainey, and Austin Freeman. Quantum Magnetism Analysis Model. Vers. 1.0. Computer software. 2012. Java 1.6. 2 July 2015 <http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12308&DocID=3050>.
BibTeX Export Format
@misc{ Author = "Larry Engelhardt and Chad Garland and Cameron Rainey and Austin Freeman", Title = {Quantum Magnetism Analysis Model}, Month = {July}, Year = {2012} }
Refer Export Format

%A Larry Engelhardt
%A Chad Garland
%A Cameron Rainey
%A Austin Freeman
%T Quantum Magnetism Analysis Model
%D July 27, 2012
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12308&DocID=3050
%O 1.0
%O application/java

EndNote Export Format

%0 Computer Program
%A Engelhardt, Larry
%A Garland, Chad
%A Rainey, Cameron
%A Freeman, Austin
%D July 27, 2012
%T Quantum Magnetism Analysis Model
%7 1.0
%8 July 27, 2012
%U http://www.compadre.org/Repository/document/ServeFile.cfm?ID=12308&DocID=3050


Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.

Citation Source Information

The AIP Style presented is based on information from the AIP Style Manual.

The APA Style presented is based on information from APA Style.org: Electronic References.

The Chicago Style presented is based on information from Examples of Chicago-Style Documentation.

The MLA Style presented is based on information from the MLA FAQ.

This resource is stored in 3 shared folders.

You must login to access shared folders.

Quantum Magnetism Analysis Model:

Is Based On Easy Java Simulations Modeling and Authoring Tool

The Easy Java Simulations Modeling and Authoring Tool is needed to explore the computational model used in the Quantum Magnetism Analysis Model.

relation by Wolfgang Christian

Know of another related resource? Login to relate this resource to it.
Save to my folders

Supplements

Contribute

Related Materials

Similar Materials

The OSP Network:
Open Source Physics - Tracker - EJS Modeling
Physlet Physics
Physlet Quantum Physics