Structural and magnetic phase transitions in Pr0.15Sr0.85MnO3 at high pressure

被引：0
作者：
D. P. Kozlenko
N. T. Dang
Z. Jirák
S. E. Kichanov
E. V. Lukin
B. N. Savenko
L. S. Dubrovinsky
C. Lathe
C. Martin
机构：
[1] Frank Laboratory of Neutron Physics,
[2] Tula State University,undefined
[3] Institute of Physics,undefined
[4] Bayerisches Geoinstitute,undefined
[5] University Bayreuth,undefined
[6] Helmholtz Centre Potsdam,undefined
[7] Telegrafenberg,undefined
[8] Laboratoire CRISMAT,undefined
来源：
The European Physical Journal B | 2010年 / 77卷
关键词：
Manganite; Structural Phase Transition; Magnetic Phase Transition; Magnetic Phase Diagram; High External Pressure;
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摘要：
The crystal and magnetic structures of Pr0.15Sr0.85MnO3 manganite have been studied by means of powder X-ray and neutron diffraction in the temperature range 10–400 K at high external pressures up to 55 and 4 GPa, respectively. A structural phase transition from cubic to tetragonal phase upon compression was observed, with large positive pressure coefficient of transition temperature dTct/dP = 28(2) K/GPa. The C-type antiferromagnetic (AFM) ground state is formed below TN≈ 260 K at ambient pressure. While at ambient pressure the structural and magnetic transition temperatures are close, Tct ~ TN, upon compression they become decoupled with TN ≪ Tct due to much weaker TN pressure dependence with coefficient dTN/dP = 3.8(1) K/GPa.
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页码：407 / 411
页数：4
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