Stable magnesium peroxide at high pressure

zu Verbundenen Objekten

Abstract: Rocky planets are thought to comprise compounds of Mg and O as these are among the most abundant elements, but knowledge of their stable phases may be incomplete. MgO is known to be remarkably stable to very high pressure and chemically inert under reduced condition of the Earth’s lower mantle. However, in exoplanets oxygen may be a more abundant constituent. Here, using synchrotron x-ray diffraction in laser-heated diamond anvil cells, we show that MgO and oxygen react at pressures above 96 GPa and T = 2150 K with the formation of I4/mcm MgO2. Raman spectroscopy detects the presence of a peroxide ion (O22−) in the synthesized material as well as in the recovered specimen. Likewise, energy-dispersive x-ray spectroscopy confirms that the recovered sample has higher oxygen content than pure MgO. Our finding suggests that MgO2 may be present together or instead of MgO in rocky mantles and rocky planetary cores under highly oxidized conditions

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch
Anmerkungen
ISSN: 2045-2322

Ereignis
Veröffentlichung
(wo)
Freiburg
(wer)
Universität
(wann)
2024
Urheber
Lobanov, Sergey
Zhu, Qiang
Holtgrewe, Nicholas
Prescher, Clemens
Prakapenka, Vitali B.
Oganov, Artem R.
Goncharov, Alexander F.

DOI
10.1038/srep13582
URN
urn:nbn:de:bsz:25-freidok-2432263
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
15.08.2025, 07:36 MESZ

Datenpartner

Dieses Objekt wird bereitgestellt von:
Deutsche Nationalbibliothek. Bei Fragen zum Objekt wenden Sie sich bitte an den Datenpartner.
Original beim Datenpartner anzeigen

Beteiligte

Entstanden

  • 2024

Ähnliche Objekte (12)

Kinetic Investigation of Peroxide Decomposition by Calorimetry under High‐Pressure

Kinetic Investigation of Peroxide Decomposition by Calorimetry under High‐Pressure

High Pressure Synthesis of Pr 2 O 5 – A Unique Lanthanoid (IV) Oxide Peroxide

High Pressure Synthesis of Pr 2 O 5 – A Unique Lanthanoid (IV) Oxide Peroxide

Offset stable piezoresistive high-temperature pressure sensors based on silicon

Offset stable piezoresistive high-temperature pressure sensors based on silicon

Synthesis of Magnesium Carbonate via Carbonation under High Pressure in an Autoclave

Synthesis of Magnesium Carbonate via Carbonation under High Pressure in an Autoclave

Applications of Transitiometry: Determination of Thermophysical Properties and Decomposition Kinetics of Peroxide(Mixtures) Under High-Pressure

Applications of Transitiometry: Determination of Thermophysical Properties and Decomposition Kinetics of Peroxide(Mixtures) Under High-Pressure

Using high-pressure torsion to process an aluminum–magnesium nanocomposite through diffusion bonding

Using high-pressure torsion to process an aluminum–magnesium nanocomposite through diffusion bonding

Achieving Superplastic Elongations in an AZ80 Magnesium Alloy Processed by High‐Pressure Torsion

Achieving Superplastic Elongations in an AZ80 Magnesium Alloy Processed by High‐Pressure Torsion

High‐Performance and Stable Dopant‐Free Silicon Solar Cells with Magnesium Acetylacetonate Electron‐Selective Contacts

High‐Performance and Stable Dopant‐Free Silicon Solar Cells with Magnesium Acetylacetonate Electron‐Selective Contacts

Organische Peroxide

Organische Peroxide

Structural Design and DLP 3D Printing Preparation of High Strain Stable Flexible Pressure Sensors

Structural Design and DLP 3D Printing Preparation of High Strain Stable Flexible Pressure Sensors

Thermochemiluminescent peroxide crystals

Thermochemiluminescent peroxide crystals

High-pressure versus low-pressure home non-invasive positive pressure ventilation with built-in software in patients with stable hypercapnic COPD: a pilot study

High-pressure versus low-pressure home non-invasive positive pressure ventilation with built-in software in patients with stable hypercapnic COPD: a pilot study

Verbundene Objekte