Increased Low-Temperature Magnetization and Spin-Reorientational Transition in the Polar Phase of (Ca, Mn)-Doped Bismuth Ferrites
Khomchenko V. A., Silibin M. V., Bushinsky M. V., Latushka S. I., Wiśniewski P., Łukowiak A., Franz A., Karpinsky D. V.
Physica Status Solidi (B): Basic Solid State Physics
Vol.257, Issue8, Num.2000121
Опубликовано: 2020
Тип ресурса: Статья
DOI:10.1002/pssb.202000121
Аннотация:
Solid-state synthesis and an investigation of the crystal/magnetic structure and magnetic properties of the Bi1−xCaxFe0.6Mn0.4O3+δ [x = 0.1, 0.15; δ = 0.02(2)] multiferroics have been conducted to explore an approach to designing ferroelectric materials with the enhanced magnetization attributed to the ferromagnetic superexchange involving the Mn 3d states. It is shown that the (Ca, Mn)-doped samples maintain the polar R3c structure characteristic of the pure bismuth ferrite. For both these compounds, an antiferromagnetic (AFM) G-type ordering of the Fe/Mn magnetic moments along the hexagonal c-axis is revealed at room temperature. The reorientation of the magnetic moments from the c- to a-axis occurs as temperature decreases. Being consistent with the competing character of the superexchange between Mn3+, Mn4+, and Fe3+ ions, the coexistence of AFM long-range-ordered and superparamagnetic phases underlying the appearance of a significant magnetization in the low-temperature range is o
Ключевые слова:
BiFeO3; multiferroics; neutron diffraction
Antiferromagnetism; Bismuth; Crystal structure; Ferroelectric materials; Magnetic moments; Magnetization; Multiferroics; Antiferromagnetics; Bismuth ferrites; Low temperatures; Low-temperature magnetization; Solid-state synthesis; Structure characteristic; Superparamagnetics; Temperature decrease; Temperature
Язык текста: Английский
ISSN: 1521-3951
Khomchenko V. A.
Silibin M. V. Maksim Viktorovich 1983-
Bushinsky M. V.
Latushka S. I.
Wiśniewski P.
Łukowiak A.
Franz A.
Karpinsky D. V.
Хомченко В. А.
Силибин М. В. Максим Викторович 1983-
Бушинскy М. В.
Латюшка С. И.
Wиśниеwски П.
Łукоwиак А.
Франз А.
Карпинскy Д. В.
Increased Low-Temperature Magnetization and Spin-Reorientational Transition in the Polar Phase of (Ca, Mn)-Doped Bismuth Ferrites
Текст визуальный непосредственный
Physica Status Solidi (B): Basic Solid State Physics
John Wiley & Sons, Inc.
Vol.257, Issue8 Num.2000121
2020
Статья
BiFeO3 multiferroics neutron diffraction
Antiferromagnetism Bismuth Crystal structure Ferroelectric materials Magnetic moments Magnetization Multiferroics Antiferromagnetics Bismuth ferrites Low temperatures Low-temperature magnetization Solid-state synthesis Structure characteristic Superparamagnetics Temperature decrease Temperature
Solid-state synthesis and an investigation of the crystal/magnetic structure and magnetic properties of the Bi1−xCaxFe0.6Mn0.4O3+δ [x = 0.1, 0.15; δ = 0.02(2)] multiferroics have been conducted to explore an approach to designing ferroelectric materials with the enhanced magnetization attributed to the ferromagnetic superexchange involving the Mn 3d states. It is shown that the (Ca, Mn)-doped samples maintain the polar R3c structure characteristic of the pure bismuth ferrite. For both these compounds, an antiferromagnetic (AFM) G-type ordering of the Fe/Mn magnetic moments along the hexagonal c-axis is revealed at room temperature. The reorientation of the magnetic moments from the c- to a-axis occurs as temperature decreases. Being consistent with the competing character of the superexchange between Mn3+, Mn4+, and Fe3+ ions, the coexistence of AFM long-range-ordered and superparamagnetic phases underlying the appearance of a significant magnetization in the low-temperature range is o