Magnetic measurements on micron-size samples under high pressure using designed NV centers

Pressure is a unique tool to tune the interplay between structural, electronic and magnetic interactions. It leads to remarkable properties of materials such as recent temperature records in superconductivity. Advanced magnetic measurements under very high pressure in the Diamond Anvil Cell (DAC) us...

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Published inarXiv.org
Main Authors Lesik, Margarita, Plisson, Thomas, Toraille, Loïc, Renaud, Justine, Occelli, Florent, Schmidt, Martin, Salord, Olivier, Delobbe, Anne, Debuisschert, Thierry, Rondin, Loïc, Loubeyre, Paul, Roch, Jean-François
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 24.12.2018
Subjects
Borides
Diamond anvil cells
Diamonds
Ferromagnetism
Iron
Magnesium compounds
Magnetic measurement
Magnetic properties
Magnetism
Material properties
Optical properties
Physics - Mesoscale and Nanoscale Physics
Superconductivity
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Summary:Pressure is a unique tool to tune the interplay between structural, electronic and magnetic interactions. It leads to remarkable properties of materials such as recent temperature records in superconductivity. Advanced magnetic measurements under very high pressure in the Diamond Anvil Cell (DAC) use synchrotron approaches but these are lacking a formal link to the macroscopic magnetic properties. We report an alternative method consisting in optical magnetometry based on nitrogen-vacancy (NV) centers created at the surface of a diamond anvil. We illustrate the method by two measurements realized at room and low temperature respectively: the pressure evolution of the magnetization of an iron bead up to 30 GPa showing the iron ferromagnetic collapse and the detection of the superconducting transition of MgB2 at 7 GPa.
ISSN:2331-8422
DOI:10.48550/arxiv.1812.09894