Investigation of Nd₂CuO₄ crystal structure at high pressure by neutron diffraction

V. P. Glazkov RRC “Kurchatov Institute”, 123182, Moscow, Russia

B. N. Savenko Frank laboratory of Neutron Physics JINR, 141980, Dubna, Russia

V. A. Somenkov RRC “Kurchatov Institute”, 123182, Moscow, Russia

D. V. Sheptyakov Frank laboratory of Neutron Physics JINR, 141980, Dubna, Russia

S. Sh. Shilstein RRC “Kurchatov Institute”, 123182, Moscow, Russia

Abstract

The crystal structure of Nd₂CuO₄ has been studied by neutron diffraction at pressure up to 5 Gpa. The volume compressibility value was determined as 5·6·10⁻³/Gpa. The decrease of positional parameter of neodymium at high pressure has been observed. This structural change is explained by pressure induced neodymium ions charge increase.

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Investigation of Nd₂CuO₄ crystal structure at high pressure by neutron diffraction

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Investigation of Nd₂CuO₄ crystal structure at high pressure by neutron diffraction