High-pressure synthesis, crystal structure, and magnetic properties of the Shastry-Sutherland-lattice oxides BaLn2ZnO5 (Ln = Pr, Sm, Eu)

Yuto Ishii; Jie Chen; Hiroyuki K. Yoshida; Migaku Oda; Andrew D. Christianson; Kazunari Yamaura

doi:10.1016/j.jssc.2020.121489

High-pressure synthesis, crystal structure, and magnetic properties of the Shastry-Sutherland-lattice oxides BaLn₂ZnO₅ (Ln = Pr, Sm, Eu)

Yuto Ishii, Jie Chen, Hiroyuki K. Yoshida, Migaku Oda, Andrew D. Christianson, Kazunari Yamaura

Correlated Electron Materials

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

BaPr₂ZnO₅, BaSm₂ZnO₅, and BaEu₂ZnO₅ – a series of 4f magnetic insulators comprising the Shastry-Sutherland lattice – were synthesized via a solid-state reaction under high-pressure and high-temperature conditions. The magnetic behaviors are well characterized by the localized 4f electrons of each Ln³⁺ (= Pr, Sm, Eu) under the influence of the crystal-electric field of the surrounding ions. The magnetic susceptibility and heat capacity measurements of BaPr₂ZnO₅ (Pr³⁺; 4f^{2 3}H₄) indicate the splitting of the ground state J-multiplet due to the crystal-electric field. BaSm₂ZnO₅ (Sm³⁺; 4f^{5 6}H_5/2) is a strong Van Vleck paramagnet, while BaEu₂ZnO₅ is non-magnetic due to the ⁷F₀ ground state (Eu³⁺; 4f^{6 7}F₀). The series of new oxides enriches a group of the Shastry-Sutherland lattice materials and helps to develop a range of two-dimensional quantum materials.

Original language	English
Article number	121489
Journal	Journal of Solid State Chemistry
Volume	289
DOIs	https://doi.org/10.1016/j.jssc.2020.121489
State	Published - Sep 2020

Funding

We thank Dr. Y. Matsushita for helpful discussion. This work was supported by JSPS KAKENHI Grant Number JP19J14391 (Grant-in-Aid for JSPS Research Fellows) (Y.I), JP20H05276 (K.Y), JP18K03529 (Grant-in-Aid for Scientific Research (C)) (H.K.Y), and research grant from Nippon Sheet Glass Foundation for Materials Science and Engineering (#40-37) (K.Y.) A.D.C was supported by the U.S. Department of Energy, Office of Science, Basic Energy Science, Materials Science and Engineering Division. The synchrotron radiation experiments were performed at the NIMS synchrotron X-ray station at Spring-8 with the approval of the Japan Synchrotron Radiation Research Institute (Proposal Number: 2019B4500,2019A4501,2018B4502).

Keywords

BaEuZnO
BaPrZnO
BaSmZnO
High-pressure synthesis
Shastry-sutherland lattice

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10.1016/j.jssc.2020.121489

Cite this

@article{b8264a5b9034472b9f075d1849112d7e,

title = "High-pressure synthesis, crystal structure, and magnetic properties of the Shastry-Sutherland-lattice oxides BaLn2ZnO5 (Ln = Pr, Sm, Eu)",

abstract = "BaPr2ZnO5, BaSm2ZnO5, and BaEu2ZnO5 – a series of 4f magnetic insulators comprising the Shastry-Sutherland lattice – were synthesized via a solid-state reaction under high-pressure and high-temperature conditions. The magnetic behaviors are well characterized by the localized 4f electrons of each Ln3+ (= Pr, Sm, Eu) under the influence of the crystal-electric field of the surrounding ions. The magnetic susceptibility and heat capacity measurements of BaPr2ZnO5 (Pr3+; 4f2 3H4) indicate the splitting of the ground state J-multiplet due to the crystal-electric field. BaSm2ZnO5 (Sm3+; 4f5 6H5/2) is a strong Van Vleck paramagnet, while BaEu2ZnO5 is non-magnetic due to the 7F0 ground state (Eu3+; 4f6 7F0). The series of new oxides enriches a group of the Shastry-Sutherland lattice materials and helps to develop a range of two-dimensional quantum materials.",

keywords = "BaEuZnO, BaPrZnO, BaSmZnO, High-pressure synthesis, Shastry-sutherland lattice",

author = "Yuto Ishii and Jie Chen and Yoshida, \{Hiroyuki K.\} and Migaku Oda and Christianson, \{Andrew D.\} and Kazunari Yamaura",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Inc.",

year = "2020",

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doi = "10.1016/j.jssc.2020.121489",

language = "English",

volume = "289",

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AU - Ishii, Yuto

AU - Chen, Jie

AU - Yoshida, Hiroyuki K.

AU - Oda, Migaku

AU - Christianson, Andrew D.

AU - Yamaura, Kazunari

PY - 2020/9

Y1 - 2020/9

N2 - BaPr2ZnO5, BaSm2ZnO5, and BaEu2ZnO5 – a series of 4f magnetic insulators comprising the Shastry-Sutherland lattice – were synthesized via a solid-state reaction under high-pressure and high-temperature conditions. The magnetic behaviors are well characterized by the localized 4f electrons of each Ln3+ (= Pr, Sm, Eu) under the influence of the crystal-electric field of the surrounding ions. The magnetic susceptibility and heat capacity measurements of BaPr2ZnO5 (Pr3+; 4f2 3H4) indicate the splitting of the ground state J-multiplet due to the crystal-electric field. BaSm2ZnO5 (Sm3+; 4f5 6H5/2) is a strong Van Vleck paramagnet, while BaEu2ZnO5 is non-magnetic due to the 7F0 ground state (Eu3+; 4f6 7F0). The series of new oxides enriches a group of the Shastry-Sutherland lattice materials and helps to develop a range of two-dimensional quantum materials.

AB - BaPr2ZnO5, BaSm2ZnO5, and BaEu2ZnO5 – a series of 4f magnetic insulators comprising the Shastry-Sutherland lattice – were synthesized via a solid-state reaction under high-pressure and high-temperature conditions. The magnetic behaviors are well characterized by the localized 4f electrons of each Ln3+ (= Pr, Sm, Eu) under the influence of the crystal-electric field of the surrounding ions. The magnetic susceptibility and heat capacity measurements of BaPr2ZnO5 (Pr3+; 4f2 3H4) indicate the splitting of the ground state J-multiplet due to the crystal-electric field. BaSm2ZnO5 (Sm3+; 4f5 6H5/2) is a strong Van Vleck paramagnet, while BaEu2ZnO5 is non-magnetic due to the 7F0 ground state (Eu3+; 4f6 7F0). The series of new oxides enriches a group of the Shastry-Sutherland lattice materials and helps to develop a range of two-dimensional quantum materials.

KW - BaEuZnO

KW - BaPrZnO

KW - BaSmZnO

KW - High-pressure synthesis

KW - Shastry-sutherland lattice

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