Room temperature polar and weak-ferromagnetic oxide with low dielectric loss

Nagamalleswari Katragadda; Pranab Mandal; Premakumar Yanda; A. Sundaresan; S. D. Kaushik; Weiguo Zhang; P. Shiv Halasyamani; Alicia María Manjón-Sanz

doi:10.1016/j.mseb.2023.116869

Room temperature polar and weak-ferromagnetic oxide with low dielectric loss

Nagamalleswari Katragadda, Pranab Mandal, Premakumar Yanda, A. Sundaresan, S. D. Kaushik, Weiguo Zhang, P. Shiv Halasyamani, Alicia María Manjón-Sanz

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Abstract

Single-phase materials that are simultaneously ferroelectric and ferromagnetic at room temperature are promising for devices such as non-volatile random-access memory. Perovskite BiFeO₃ which crystallizes in the polar rhombohedral structure (R3c) is ferroelectric and antiferromagnetic at room temperature. Here, we report a family of perovskite oxides in the BiFeO₃ – Bi_2/3TiO₃ – ATiO₃ (where A²⁺ is divalent alkaline earth metal ions e.g., Ca²⁺, Sr²⁺, Ba²⁺) ternary phase diagram that is polar as well as weak ferromagnetic above room temperature. The composition (Bi_0.9167A_0.075)(Fe_0.9Ti_0.1)O₃ crystallizes in the polar rhombohedral structure space group R3c as corroborated by powder X-ray and neutron diffraction analysis. The nearly pure A-site perovskite possesses a long-range magnetic ordering above room temperature. These perovskites show a low dielectric loss, and the electrical response is dominated by grain contributions below 723 K.

Original language	English
Article number	116869
Journal	Materials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume	298
DOIs	https://doi.org/10.1016/j.mseb.2023.116869
State	Published - Dec 2023

Funding

Dr. P. Mandal and Ms. K N Malleswari acknowledge the financial support of the Early Career Research Grant from the Science and Engineering Research Board (SERB), India Grant No. ECR/2018/001252. The authors acknowledge the financial support from UGC-DAE CSR, India through a Collaborative Research Scheme (CRS) project number CRS/2021-22/03/562. A portion of this research used resources at the Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory (IPTS-26971). WZ and PSH thank the Welch Foundation (Grant E-1457) and the NSF (DMR-2002319) for their support. Dr. P. Mandal and Ms. K N Malleswari acknowledge the financial support of the Early Career Research Grant from the Science and Engineering Research Board (SERB), India Grant No. ECR/2018/001252. The authors acknowledge the financial support from UGC-DAE CSR, India through a Collaborative Research Scheme (CRS) project number CRS/2021-22/03/562. A portion of this research used resources at the Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory (IPTS-26971). WZ and PSH thank the Welch Foundation (Grant E-1457) and the NSF (DMR-2002319) for their support.

Keywords

Impedance spectroscopy
Multiferroic
Perovskites
Polar
Weak ferromagnetic

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title = "Room temperature polar and weak-ferromagnetic oxide with low dielectric loss",

abstract = "Single-phase materials that are simultaneously ferroelectric and ferromagnetic at room temperature are promising for devices such as non-volatile random-access memory. Perovskite BiFeO3 which crystallizes in the polar rhombohedral structure (R3c) is ferroelectric and antiferromagnetic at room temperature. Here, we report a family of perovskite oxides in the BiFeO3 – Bi2/3TiO3 – ATiO3 (where A2+ is divalent alkaline earth metal ions e.g., Ca2+, Sr2+, Ba2+) ternary phase diagram that is polar as well as weak ferromagnetic above room temperature. The composition (Bi0.9167A0.075)(Fe0.9Ti0.1)O3 crystallizes in the polar rhombohedral structure space group R3c as corroborated by powder X-ray and neutron diffraction analysis. The nearly pure A-site perovskite possesses a long-range magnetic ordering above room temperature. These perovskites show a low dielectric loss, and the electrical response is dominated by grain contributions below 723 K.",

keywords = "Impedance spectroscopy, Multiferroic, Perovskites, Polar, Weak ferromagnetic",

author = "Nagamalleswari Katragadda and Pranab Mandal and Premakumar Yanda and A. Sundaresan and Kaushik, {S. D.} and Weiguo Zhang and {Shiv Halasyamani}, P. and Manj{\'o}n-Sanz, {Alicia Mar{\'i}a}",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2023",

month = dec,

doi = "10.1016/j.mseb.2023.116869",

language = "English",

volume = "298",

journal = "Materials Science and Engineering B: Solid-State Materials for Advanced Technology",

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T1 - Room temperature polar and weak-ferromagnetic oxide with low dielectric loss

AU - Katragadda, Nagamalleswari

AU - Mandal, Pranab

AU - Yanda, Premakumar

AU - Sundaresan, A.

AU - Kaushik, S. D.

AU - Zhang, Weiguo

AU - Shiv Halasyamani, P.

AU - Manjón-Sanz, Alicia María

PY - 2023/12

Y1 - 2023/12

N2 - Single-phase materials that are simultaneously ferroelectric and ferromagnetic at room temperature are promising for devices such as non-volatile random-access memory. Perovskite BiFeO3 which crystallizes in the polar rhombohedral structure (R3c) is ferroelectric and antiferromagnetic at room temperature. Here, we report a family of perovskite oxides in the BiFeO3 – Bi2/3TiO3 – ATiO3 (where A2+ is divalent alkaline earth metal ions e.g., Ca2+, Sr2+, Ba2+) ternary phase diagram that is polar as well as weak ferromagnetic above room temperature. The composition (Bi0.9167A0.075)(Fe0.9Ti0.1)O3 crystallizes in the polar rhombohedral structure space group R3c as corroborated by powder X-ray and neutron diffraction analysis. The nearly pure A-site perovskite possesses a long-range magnetic ordering above room temperature. These perovskites show a low dielectric loss, and the electrical response is dominated by grain contributions below 723 K.

AB - Single-phase materials that are simultaneously ferroelectric and ferromagnetic at room temperature are promising for devices such as non-volatile random-access memory. Perovskite BiFeO3 which crystallizes in the polar rhombohedral structure (R3c) is ferroelectric and antiferromagnetic at room temperature. Here, we report a family of perovskite oxides in the BiFeO3 – Bi2/3TiO3 – ATiO3 (where A2+ is divalent alkaline earth metal ions e.g., Ca2+, Sr2+, Ba2+) ternary phase diagram that is polar as well as weak ferromagnetic above room temperature. The composition (Bi0.9167A0.075)(Fe0.9Ti0.1)O3 crystallizes in the polar rhombohedral structure space group R3c as corroborated by powder X-ray and neutron diffraction analysis. The nearly pure A-site perovskite possesses a long-range magnetic ordering above room temperature. These perovskites show a low dielectric loss, and the electrical response is dominated by grain contributions below 723 K.

KW - Impedance spectroscopy

KW - Multiferroic

KW - Perovskites

KW - Polar

KW - Weak ferromagnetic

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DO - 10.1016/j.mseb.2023.116869

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AN - SCOPUS:85171453007

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JO - Materials Science and Engineering B: Solid-State Materials for Advanced Technology

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M1 - 116869

ER -

Room temperature polar and weak-ferromagnetic oxide with low dielectric loss

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