Abstract
An Ising system consisting of triplet ions with a zero-field splitting D and an exchange interaction J between nearest neighbours has been investigated using a molecular field approximation. The behaviour of the susceptibility is discussed. The possibility of first-order phase transitions in magnetic fields is investigated in the case of ferromagnetic exchange ( J > 0). In the limit H → ∞, D → ∞, μH − D = = finite, the system is equivalent to an Ising system of doublet ions with an appropriate value of the exchange interaction in a magnetic field. For large values of D and sufficiently low temperatures, a magnetic field can give rise to one first-order transition, if J > 0, and to two second-order transitions, if J < 0.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
