Comparative Raman scattering study of Ba3MSb2O9 (M=Zn, Co and Cu)

A. Glamazda; P. Lemmens; S. H. Do; K. Y. Choi

Comparative Raman scattering study of Ba₃MSb₂O₉ (M=Zn, Co and Cu)

A. Glamazda, P. Lemmens, S. H. Do, K. Y. Choi

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

Abstract

Raman spectroscopy is combined with lattice dynamic calculations to investigate the magnetic and structural properties of the 6H-perovskite compounds Ba₃MSb₂O₉ (M = Zn, Co and Cu). Unlike the nonmagnetic Ba₃MSb₂O₉ compound, the magnetic counterparts Ba₃MSb₂O₉ (M = Co and Cu) show both lattice anomalies for temperatures below 100 K and develop highly correlated spin states below 50 K. This is ascribed to an instability of conventional magnetic excitations for the equilateral triangular antiferromagnet Ba₃MSb₂O₉ and a coexistence of spin-orbital liquid and random singlet state for the decorated honeycomb compound Ba₃MSb₂O₉ containing a nearly identical volume fraction of hexagonal and orthorhombic phases. Our results demonstrate that Ba₃MSb₂O₉ provides a rich reservoir for hosting diverse magnetic and structural phases as a function of the metal ion M. PACS: 63.20.-e Phonons in crystal lattices; 75.45.+j Macroscopic quantum phenomena in magnetic systems; 78.30.-j Infrared and Raman spectra.

Original language	English
Pages (from-to)	683-691
Number of pages	9
Journal	Fizika Nizkikh Temperatur
Volume	43
Issue number	5
State	Published - May 2017
Externally published	Yes

Keywords

Raman scattering
Spin frustration
Spin-phonon coupling

Cite this

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title = "Comparative Raman scattering study of Ba3MSb2O9 (M=Zn, Co and Cu)",

abstract = "Raman spectroscopy is combined with lattice dynamic calculations to investigate the magnetic and structural properties of the 6H-perovskite compounds Ba3MSb2O9 (M = Zn, Co and Cu). Unlike the nonmagnetic Ba3MSb2O9 compound, the magnetic counterparts Ba3MSb2O9 (M = Co and Cu) show both lattice anomalies for temperatures below 100 K and develop highly correlated spin states below 50 K. This is ascribed to an instability of conventional magnetic excitations for the equilateral triangular antiferromagnet Ba3MSb2O9 and a coexistence of spin-orbital liquid and random singlet state for the decorated honeycomb compound Ba3MSb2O9 containing a nearly identical volume fraction of hexagonal and orthorhombic phases. Our results demonstrate that Ba3MSb2O9 provides a rich reservoir for hosting diverse magnetic and structural phases as a function of the metal ion M. PACS: 63.20.-e Phonons in crystal lattices; 75.45.+j Macroscopic quantum phenomena in magnetic systems; 78.30.-j Infrared and Raman spectra.",

keywords = "Raman scattering, Spin frustration, Spin-phonon coupling",

author = "A. Glamazda and P. Lemmens and Do, \{S. H.\} and Choi, \{K. Y.\}",

note = "Publisher Copyright: {\textcopyright} A. Glamazda, P. Lemmens, S.-H. Do, and K.-Y. Choi, 2017.",

year = "2017",

month = may,

language = "English",

volume = "43",

pages = "683--691",

journal = "Fizika Nizkikh Temperatur",

issn = "0132-6414",

publisher = "B.Verkin Institute for Low Temperature Physics and Engineering of the NAS of Ukraine",

number = "5",

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TY - JOUR

T1 - Comparative Raman scattering study of Ba3MSb2O9 (M=Zn, Co and Cu)

AU - Glamazda, A.

AU - Lemmens, P.

AU - Do, S. H.

AU - Choi, K. Y.

N1 - Publisher Copyright: © A. Glamazda, P. Lemmens, S.-H. Do, and K.-Y. Choi, 2017.

PY - 2017/5

Y1 - 2017/5

N2 - Raman spectroscopy is combined with lattice dynamic calculations to investigate the magnetic and structural properties of the 6H-perovskite compounds Ba3MSb2O9 (M = Zn, Co and Cu). Unlike the nonmagnetic Ba3MSb2O9 compound, the magnetic counterparts Ba3MSb2O9 (M = Co and Cu) show both lattice anomalies for temperatures below 100 K and develop highly correlated spin states below 50 K. This is ascribed to an instability of conventional magnetic excitations for the equilateral triangular antiferromagnet Ba3MSb2O9 and a coexistence of spin-orbital liquid and random singlet state for the decorated honeycomb compound Ba3MSb2O9 containing a nearly identical volume fraction of hexagonal and orthorhombic phases. Our results demonstrate that Ba3MSb2O9 provides a rich reservoir for hosting diverse magnetic and structural phases as a function of the metal ion M. PACS: 63.20.-e Phonons in crystal lattices; 75.45.+j Macroscopic quantum phenomena in magnetic systems; 78.30.-j Infrared and Raman spectra.

AB - Raman spectroscopy is combined with lattice dynamic calculations to investigate the magnetic and structural properties of the 6H-perovskite compounds Ba3MSb2O9 (M = Zn, Co and Cu). Unlike the nonmagnetic Ba3MSb2O9 compound, the magnetic counterparts Ba3MSb2O9 (M = Co and Cu) show both lattice anomalies for temperatures below 100 K and develop highly correlated spin states below 50 K. This is ascribed to an instability of conventional magnetic excitations for the equilateral triangular antiferromagnet Ba3MSb2O9 and a coexistence of spin-orbital liquid and random singlet state for the decorated honeycomb compound Ba3MSb2O9 containing a nearly identical volume fraction of hexagonal and orthorhombic phases. Our results demonstrate that Ba3MSb2O9 provides a rich reservoir for hosting diverse magnetic and structural phases as a function of the metal ion M. PACS: 63.20.-e Phonons in crystal lattices; 75.45.+j Macroscopic quantum phenomena in magnetic systems; 78.30.-j Infrared and Raman spectra.

KW - Raman scattering

KW - Spin frustration

KW - Spin-phonon coupling

UR - https://www.scopus.com/pages/publications/85016398543

M3 - Article

AN - SCOPUS:85016398543

SN - 0132-6414

VL - 43

SP - 683

EP - 691

JO - Fizika Nizkikh Temperatur

JF - Fizika Nizkikh Temperatur

IS - 5

ER -

Comparative Raman scattering study of Ba₃MSb₂O₉ (M=Zn, Co and Cu)

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Keywords

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