Effect of hydrostatic pressure on ferromagnetism in two-dimensional CrI\(_3\)

We have investigated the magnetic properties of highly anisotropic layered ferromagnetic semiconductor CrI\(_3\) in presence of hydrostatic pressure (\(P\)). At ambient pressure, magnetization exhibits a clear anomaly below 212 K along with a thermal hysteresis over a wide temperature range (212-180...

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Bibliographic Details
Published inarXiv.org
Main Authors Mondal, Suchanda, Murugesan Kannan, Das, Moumita, Govindaraj, Linganan, Singha, Ratnadwip, Satpati, Biswarup, Arumugam, Sonachalam, Mandal, Prabhat
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 10.06.2019
Subjects
Curie temperature
Ferromagnetism
Hydrostatic pressure
Hysteresis
Magnetic properties
Magnetism
Magnetization
Phase transitions
Pressure effects
Temperature
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Summary:We have investigated the magnetic properties of highly anisotropic layered ferromagnetic semiconductor CrI\(_3\) in presence of hydrostatic pressure (\(P\)). At ambient pressure, magnetization exhibits a clear anomaly below 212 K along with a thermal hysteresis over a wide temperature range (212-180 K), where a first-order structural transition is observed. CrI\(_3\) undergoes a second-order ferromagnetic-paramagnetic phase transition with Curie temperature \(T_C\)=60.4 K. With application of pressure, the transition becomes sharper and \(T_C\) is found to increase from 60.4 to 64.9 K as \(P\) increases from 0 to 1.0 GPa. \(T_C\) increases with \(P\) in a sublinear fashion. The thermal hysteresis in magnetization and the increase of \(T_C\) with pressure suggest that the spin and lattice degrees of freedom are coupled. The observed increase in \(T_C\) has been explained on the basis of change in inter-layer coupling and Cr-I-Cr bond angle with pressure.
ISSN:2331-8422
DOI:10.48550/arxiv.1901.00706