convmag
Conversion between various units used in magnetism
The conversions between base units available are:
T <-> G : 1e4
T <-> Oe : 1e4
A/m <-> T : MU_0
A/m <-> G : 1e4 * MU_0
G <-> Oe : 1
A/m <-> Oe : 1e4 * MU_0
emu/cm^3 <-> T : 1e3 * MU_0
erg/Oecm^3 <-> A/m : 1e3
emu/g <-> Am^2/kg : 1
J/m^3 <-> GOe : 1e8 * MU_0
J/m^3 <-> erg/cm^3 : 1e1
erg/cm^3 <-> GOe : 1e7 * MU_0
Am^2 <-> emu : 1e3
Am^2 <-> erg/G : 1e3
Am^2 <-> erg/Oe : 1e3
emu <-> erg/G : 1
muB <-> Am^2 : MU_B
muB <-> emu : 1e3 * MU_B
muB/fu <-> T : requires user input of lattice parameters
(the factors given above are for the forward conversion)
-
permeability of free space, MU_0 = 4 * 3.14159 * 1e-7 H/m (== Vs/Am)
-
Bohr magneton, MU_B = 9.274015e-24 Am^2 (muB is the unit string for conversions with Bohr magnetons)
The prefactors available for any base unit are: M (1e6), k (1e3), m (1e-3), µ (1e-6)
You can combine prefactors and base units to give e.g. MA/m or kJ/m^3
Installation:
Pip
You can install the current release (0.0.3) with pip:
pip install convmag
Usage options:
-
a console script is provided and should be located in the Scripts directory of your Python distribution after installation. If you have this directory in your Path (environment variable on Windows) you can start the program by typing "convmag" in the console. In this case only single values can be converted (at one time).
-
the package can be imported into python and then you can pass numpy arrays into the function convert_unit(), making sure to keep the default verbose=False. That way many values can be converted at once. The converted values are returned as a numpy array for further processing.
>>> import numpy as np
>>> import convmag as cm
>>> vals_in_T = np.arange(0,130,20)
>>> vals_in_T
array([ 0, 20, 40, 60, 80, 100, 120])
>>> vals_in_Oe = cm.convert_unit(vals_in_T, "T", "Oe", verbose=False)
>>> vals_in_Oe
array([ 0., 200000., 400000., 600000., 800000., 1000000., 1200000.])
Pure python, no other dependencies.
Requires Python >= 3.6 because f-strings are used
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