Surface spin glass and exchange bias in Fe3O4 nanoparticles compacted under high pressure

Physical Review B - Condensed Matter and Materials Physics

Volumn 70, Issue 9, 2004, Pages

  Wang, H ^a   Zhu, T ^a   Zhao, K ^b   Wang, W N ^a   Wang, C S ^a   Wang, Y J ^a   Zhan, W S ^a  

^a INSTITUTE OF GEOLOGY AND GEOPHYSICS   (China)

^b LIAOCHENG UNIVERSITY   (China)

Author keywords

[No Author keywords available]

Indexed keywords

GLASS; MAGNETITE;

ARTICLE; COOLING; FREEZING; MAGNETISM; NANOPARTICLE; PRESSURE; TEMPERATURE;

EID: 19744382103     PISSN: 01631829     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevB.70.092409     Document Type: Article

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17. Notice that the bulk modulus is about hundreds GPa for oxides. Up to 5 GPa of pressure cannot destroy the lattice of the grains. So the shape of the grain should be recovered after the pressure is removed, which cannot be the possible reason for the obvious loop shift and surface magnetic behavior.