Magnetic structure of LaCrO3 Perovskite under high pressure from in situ neutron diffraction Articles uri icon

publication date

  • January 2011

start page

  • 1

end page

  • 4

issue

  • 5 (057201)

volume

  • 106

international standard serial number (ISSN)

  • 0031-9007

electronic international standard serial number (EISSN)

  • 1079-7114

abstract

  • The temperature-pressure phase diagram for both the crystal and magnetic structures of LaCrO3 perovskite has been mapped out by in situ neutron-diffraction experiments under pressure. The system offers the opportunity to study the evolution of magnetic order, spin direction, and magnetic moment on crossing the orthorhombic-rhombohedral phase boundary. Moreover, a microscopic model of the super-exchange interaction has been developed on the basis of the crystal structure obtained in this work to account for the behavior of T-N under high pressure.