potentialSet = TremoloXPotentialSet(name='Pt-Morse')
potentialSet.addParticleType(ParticleType.fromElement(Platinum))
potentialSet.addPotential(MorsePotential(
    'Pt',
    'Pt',
    r_0=2.897*Angstrom,
    k=1.6047*Angstrom**-1,
    E_0=0.7102*eV,
    r_i=6.5*Angstrom,
    r_cut=9.5*Angstrom)
)
calculator = TremoloXCalculator(parameters=potentialSet)
bulk_configuration.setCalculator(calculator)