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

12 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).

Funders	Funder number
Basic Energy Sciences
Division of Materials Sciences and Engineering
U.S. Department of Energy
Office of Science
National Institute for Materials Science	2019B4500, A4501,2018B4502
Japan Society for the Promotion of Science	JP18K03529, 20H05276, JP19J14391
Nippon Sheet Glass Foundation for Materials Science and Engineering	40-37

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",

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year = "2020",

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

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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

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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.

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