Research output: Contribution to journal › Article
Structural and magnetic phase separation of complex half-doped manganites by the example of Sm<inf>0.32</inf>Pr<inf>0.18</inf>Sr<inf>0.5</inf>MnO<inf>3</inf> / Kurbakov, A.I.; Sarapin, G.V.
In: Journal of Surface Investigation X-Ray, Synchrotron and Neutron Techniques, No. 3, 2015, p. 530-539.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Structural and magnetic phase separation of complex half-doped manganites by the example of Sm0.32Pr0.18Sr0.5MnO3
AU - Kurbakov, A.I.
AU - Sarapin, G.V.
PY - 2015
Y1 - 2015
N2 - © 2015, Pleiades Publishing, Ltd.High-resolution neutron powder diffraction is used to investigate the phase separation and microscopic nature of the magnetoresistance in complex half-doped manganites. Investigations are performed by the example of Sm0.32Pr0.18Sr0.5MnO3 exhibiting the colossal magnetoresistance effect. The structural transition from a high-temperature orthorhombic Pbnm phase to a mixed phase containing two (orthorhombic Pbnm and monoclinic P21/m) phases is revealed. A gradual decrease in the amount of the orthorhombic phase and, consequently, an increase in the amount of the monoclinic phase are observed with decreasing temperature. Redistribution of the two phases ceases below T ≈ 100 K. Low-temperature analysis of the magnetic contribution to the experimental neutron-diffraction patterns indicates that the magnetic ground state of the compound under study is phase-separated and corresponds to a mixed state involving three magnetic phase
AB - © 2015, Pleiades Publishing, Ltd.High-resolution neutron powder diffraction is used to investigate the phase separation and microscopic nature of the magnetoresistance in complex half-doped manganites. Investigations are performed by the example of Sm0.32Pr0.18Sr0.5MnO3 exhibiting the colossal magnetoresistance effect. The structural transition from a high-temperature orthorhombic Pbnm phase to a mixed phase containing two (orthorhombic Pbnm and monoclinic P21/m) phases is revealed. A gradual decrease in the amount of the orthorhombic phase and, consequently, an increase in the amount of the monoclinic phase are observed with decreasing temperature. Redistribution of the two phases ceases below T ≈ 100 K. Low-temperature analysis of the magnetic contribution to the experimental neutron-diffraction patterns indicates that the magnetic ground state of the compound under study is phase-separated and corresponds to a mixed state involving three magnetic phase
U2 - 10.1134/S1027451015030271
DO - 10.1134/S1027451015030271
M3 - Article
SP - 530
EP - 539
JO - ПОВЕРХНОСТЬ. РЕНТГЕНОВСКИЕ, СИНХРОТРОННЫЕ И НЕЙТРОННЫЕ ИССЛЕДОВАНИЯ
JF - ПОВЕРХНОСТЬ. РЕНТГЕНОВСКИЕ, СИНХРОТРОННЫЕ И НЕЙТРОННЫЕ ИССЛЕДОВАНИЯ
SN - 1027-4510
IS - 3
ER -
ID: 4006982