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1/3 plateau and 3/5 discontinuity in the magnetization and the magnetic phase diagram of hexagonal GdInO3

We report the high-pressure optical floating-zone growth of GdInO3 single crystals and show its magnetic phase diagram down to the millikelvin regime as determined by magnetization measurements. The centered-honeycomb lattice structure shows considerable magnetic frustration (|Θ|/𝑇N≃5) and develops...

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Main Authors: Yuan, Ning (Author) , Elghandour, Ahmed (Author) , Hergett, Waldemar (Author) , Ohlendorf, Rahel (Author) , Gries, Lukas (Author) , Klingeler, Rüdiger (Author)
Format: Article (Journal)
Language:English
Published: 1 December 2023
In: Physical review
Year: 2023, Volume: 108, Issue: 22, Pages: 1-9
ISSN:2469-9969
DOI:10.1103/PhysRevB.108.224403
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevB.108.224403
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevB.108.224403
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Author Notes:N. Yuan, A. Elghandour, W. Hergett, R. Ohlendorf, L. Gries, and R. Klingeler
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Summary:We report the high-pressure optical floating-zone growth of GdInO3 single crystals and show its magnetic phase diagram down to the millikelvin regime as determined by magnetization measurements. The centered-honeycomb lattice structure shows considerable magnetic frustration (|Θ|/𝑇N≃5) and develops long-range magnetic order below 𝑇N=2.1 K from a short-range-ordered paramagnetic phase. Concomitantly, a small net magnetic moment evolves at 𝑇N which points along the crystallographic 𝑐 direction. Upon cooling, the net moment reorients at 𝑇**≃1.7 K and 𝑇*≃1 K. A broad 1/3 plateau indicative of the up-up-down (𝑢⁢𝑢⁢𝑑) spin configuration appears for magnetic fields 𝐵∥𝑐 but is absent for 𝐵∥𝑎⁢𝑏, thereby suggesting easy-axis anisotropy. At 𝑇=0.4 K, a jump in magnetization at ≃3/5 of the saturation magnetization signals a discontinuous transition to a high field phase and we find evidence for a possible tricritical point. Small energy and field scales in the accessible regimes render GdInO3 a well-suited example to study the phase diagram of a semiclassical frustrated hexagonal lattice in the presence of weak easy-axis anisotropy of mainly dipolar origin.
Item Description:Im Titel ist die Zahl 3 im Ausdruck "GdInO3" tiefgestellt
Gesehen am 27.05.2024
Physical Description:Online Resource
ISSN:2469-9969
DOI:10.1103/PhysRevB.108.224403

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