Magnetic properties of pyrochlore ruthenate nd2ru2o7 studied by µsr

Utami Widyaiswari; Hideaki Sakai; Kanji Inoue; Noriaki Hanasaki; Dita Puspita Sari; Budhy Kurniawan; Isao Watanabe

doi:10.4028/www.scientific.net/KEM.860.288

Magnetic properties of pyrochlore ruthenate nd₂ru₂o₇ studied by µsr

Utami Widyaiswari, Hideaki Sakai, Kanji Inoue, Noriaki Hanasaki, Dita Puspita Sari, Budhy Kurniawan, Isao Watanabe

Department of Physics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

3 Citations (Scopus)

Abstract

We investigated the magnetic properties of pyrochlore ruthenates, R2Ru2O7, by using the muon spin relaxation (μSR) method. The appearance of a magnetically ordered state was confirmed below 145 K by observing the decrease in the initial asymmetry of the muon-spin polarization. This was due to a long-range ordering of Ru⁴⁺ spins. An additional anomaly in the μSR time spectrum was observed around 30 K. A part of the lost initial asymmetry was recovered and gradually decreases again with decreasing temperature below 30 K. This anomaly was supposed to be due to a magnetic ordering of Nd³⁺ spins which was coupled with ordered Ir moment via the 3d-4f exchange interaction.

Original language	English
Title of host publication	Physics Symposium
Subtitle of host publication	Key Research in Materials Science
Editors	Ayi Bahtiar, Togar Saragi, Sahrul Hidayat, Lusi Safriani
Publisher	Trans Tech Publications Ltd
Pages	288-293
Number of pages	6
ISBN (Print)	9783035716979
DOIs	https://doi.org/10.4028/www.scientific.net/KEM.860.288
Publication status	Published - 2020
Event	4th Padjadjaran International Physics Symposium, PIPS 2019 - Bandung, Indonesia Duration: 13 Nov 2019 → 14 Nov 2019

Publication series

Name	Key Engineering Materials
Volume	860 KEM
ISSN (Print)	1013-9826
ISSN (Electronic)	1662-9795

Conference

Conference	4th Padjadjaran International Physics Symposium, PIPS 2019
Country/Territory	Indonesia
City	Bandung
Period	13/11/19 → 14/11/19

Keywords

Magnetic ordering
Muon spin relaxation
Pyrochlore ruthenate
Solid-state reaction

Access to Document

10.4028/www.scientific.net/KEM.860.288

Cite this

Widyaiswari, U., Sakai, H., Inoue, K., Hanasaki, N., Sari, D. P., Kurniawan, B., & Watanabe, I. (2020). Magnetic properties of pyrochlore ruthenate nd₂ru₂o₇ studied by µsr. In A. Bahtiar, T. Saragi, S. Hidayat, & L. Safriani (Eds.), Physics Symposium: Key Research in Materials Science (pp. 288-293). (Key Engineering Materials; Vol. 860 KEM). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/KEM.860.288

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title = "Magnetic properties of pyrochlore ruthenate nd2ru2o7 studied by µsr",

abstract = "We investigated the magnetic properties of pyrochlore ruthenates, R2Ru2O7, by using the muon spin relaxation (μSR) method. The appearance of a magnetically ordered state was confirmed below 145 K by observing the decrease in the initial asymmetry of the muon-spin polarization. This was due to a long-range ordering of Ru4+ spins. An additional anomaly in the μSR time spectrum was observed around 30 K. A part of the lost initial asymmetry was recovered and gradually decreases again with decreasing temperature below 30 K. This anomaly was supposed to be due to a magnetic ordering of Nd3+ spins which was coupled with ordered Ir moment via the 3d-4f exchange interaction.",

keywords = "Magnetic ordering, Muon spin relaxation, Pyrochlore ruthenate, Solid-state reaction",

author = "Utami Widyaiswari and Hideaki Sakai and Kanji Inoue and Noriaki Hanasaki and Sari, {Dita Puspita} and Budhy Kurniawan and Isao Watanabe",

note = "Publisher Copyright: {\textcopyright} 2020 Trans Tech Publications Ltd, Switzerland.; 4th Padjadjaran International Physics Symposium, PIPS 2019 ; Conference date: 13-11-2019 Through 14-11-2019",

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Widyaiswari, U, Sakai, H, Inoue, K, Hanasaki, N, Sari, DP, Kurniawan, B & Watanabe, I 2020, Magnetic properties of pyrochlore ruthenate nd₂ru₂o₇ studied by µsr. in A Bahtiar, T Saragi, S Hidayat & L Safriani (eds), Physics Symposium: Key Research in Materials Science. Key Engineering Materials, vol. 860 KEM, Trans Tech Publications Ltd, pp. 288-293, 4th Padjadjaran International Physics Symposium, PIPS 2019, Bandung, Indonesia, 13/11/19. https://doi.org/10.4028/www.scientific.net/KEM.860.288

Magnetic properties of pyrochlore ruthenate nd₂ru₂o₇ studied by µsr. / Widyaiswari, Utami; Sakai, Hideaki; Inoue, Kanji et al.
Physics Symposium: Key Research in Materials Science. ed. / Ayi Bahtiar; Togar Saragi; Sahrul Hidayat; Lusi Safriani. Trans Tech Publications Ltd, 2020. p. 288-293 (Key Engineering Materials; Vol. 860 KEM).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Widyaiswari, Utami

AU - Sakai, Hideaki

AU - Inoue, Kanji

AU - Hanasaki, Noriaki

AU - Sari, Dita Puspita

AU - Kurniawan, Budhy

AU - Watanabe, Isao

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N2 - We investigated the magnetic properties of pyrochlore ruthenates, R2Ru2O7, by using the muon spin relaxation (μSR) method. The appearance of a magnetically ordered state was confirmed below 145 K by observing the decrease in the initial asymmetry of the muon-spin polarization. This was due to a long-range ordering of Ru4+ spins. An additional anomaly in the μSR time spectrum was observed around 30 K. A part of the lost initial asymmetry was recovered and gradually decreases again with decreasing temperature below 30 K. This anomaly was supposed to be due to a magnetic ordering of Nd3+ spins which was coupled with ordered Ir moment via the 3d-4f exchange interaction.

AB - We investigated the magnetic properties of pyrochlore ruthenates, R2Ru2O7, by using the muon spin relaxation (μSR) method. The appearance of a magnetically ordered state was confirmed below 145 K by observing the decrease in the initial asymmetry of the muon-spin polarization. This was due to a long-range ordering of Ru4+ spins. An additional anomaly in the μSR time spectrum was observed around 30 K. A part of the lost initial asymmetry was recovered and gradually decreases again with decreasing temperature below 30 K. This anomaly was supposed to be due to a magnetic ordering of Nd3+ spins which was coupled with ordered Ir moment via the 3d-4f exchange interaction.

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Widyaiswari U, Sakai H, Inoue K, Hanasaki N, Sari DP, Kurniawan B et al. Magnetic properties of pyrochlore ruthenate nd₂ru₂o₇ studied by µsr. In Bahtiar A, Saragi T, Hidayat S, Safriani L, editors, Physics Symposium: Key Research in Materials Science. Trans Tech Publications Ltd. 2020. p. 288-293. (Key Engineering Materials). doi: 10.4028/www.scientific.net/KEM.860.288