Antiferromagnetic cluster spin-glass behavior in Pr117Co54.5Sn115.2 – A compound with a giant unit cell

Liu, J.; Mudryk, Yaroslav; Zou, Jianfeng; Pecharsky, V. K.; Gschneidner, K.A.

doi:10.1016/j.jallcom.2014.02.087

Cited by 11 publications

(23 citation statements)

References 26 publications

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“…Since irreversibility occurs only at low temperatures, well below the magnetic ordering transition at T C , the former scenario is more plausible. On the other hand, magnetic frustration is to be expected in this system considering the spin-glass behavior of the Pr 117 Co 54.5 Sn 115.2 [27]. both of which are practically identical to those reported in Ref.…”

Section: Magnetic Susceptibilitysupporting

confidence: 89%

“…It is somewhat surprising that the ac magnetic susceptibility of Gd 117 Co 56.4 Sn 114.3 shows only weak frequency dependence, when much stronger frequency dependence related to cluster spin glass behavior is observed in the isostructural compound Pr 117 Co 54.5 Sn 115.2 [27] as well as in the structurally similar Tb 117 Fe 52 Ge 113.8 [28]. It is known that structural disorder is present in all of Weiss constant, θ p = 89 K ( Fig.…”

Section: Magnetic Susceptibilitymentioning

confidence: 99%

“…The physical properties of these compounds are not well understood, but several recent studies report basic magnetic and transport properties mainly for R 117 Co 54+x Sn 112±y alloys, [22][23][24][25][26][27] but also for Tb 117 Fe 52 Ge 113.8 (1) [28], and R 117 Ni 54-y Sn 112-z [26]. The presence of chemical and structural disorder, and the fact that these systems are on the edge of breaking translational symmetry leads to predominantly glassy behavior.…”

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confidence: 99%

“…The presence of chemical and structural disorder, and the fact that these systems are on the edge of breaking translational symmetry leads to predominantly glassy behavior. For example, cluster spin glass ground states have been observed in Pr 117 Co 54.5 Sn 115.2 [27] and Tb 117 Fe 52 Ge 113.8 [28], and an exceptionally low lattice thermal conductivity was reported for a single crystal of Gd 117 Co 56 Sn 112 [23].…”

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confidence: 99%

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On the edge of periodicity: Unconventional magnetism of Gd117Co56.4Sn114.3

Liu

Ryan

Pecharsky

2017

Journal of Alloys and Compounds

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Magnetization measurements reveal the onset of magnetic ordering at TC = 65 K followed by three additional magnetic anomalies at T1 = 47 K, T2 = 28 K, and T3 = 11 K in Gd117Co56.4Sn114.3 -a compound with a giant cubic unit cell that crystallizes in the Dy117Co56Sn112 structure type with space group Fm3¯m and lattice parameter a = 30.186 Å. The magnetic ordering temperature increases with applied magnetic field; however, the analysis of magnetic data indicates that antiferromagnetic interactions also play a role in the ground state. AC magnetic susceptibility confirms multiple magnetic anomalies and shows minor frequency dependence. The local magnetic ordering below 60 K is supported by the Mössbauer spectroscopy. A single broad anomaly is detected at T3 in the heat capacity; we suggest that magnetic domains form below this temperature. These data highlight unique features of magnetism in this and, potentially, other rare-earth intermetallics crystallizing with giant unit-cells where the exchange correlation lengths are much shorter when compared to the periodicity of the crystal lattice. AbstractMagnetization measurements reveal the onset of magnetic ordering at T C = 65 K followed by three additional magnetic anomalies at T 1 = 47 K, T 2 = 28 K, and T 3 = 11 K in Gd 117 Co 56.4 Sn 114.3 -a compound with a giant cubic unit cell that crystallizes in the Dy 117 Co 56 Sn 112 structure type with space group 3 � and lattice parameter a = 30.186 Å. The magnetic ordering temperature increases with applied magnetic field; however, the analysis of magnetic data indicates that antiferromagnetic interactions also play a role in the ground state. AC magnetic susceptibility confirms multiple magnetic anomalies and shows minor frequency dependence. The local magnetic ordering below 60 K is supported by the Mössbauer spectroscopy. A single broad anomaly is detected at T 3 in the heat capacity; we suggest that magnetic domains form below this temperature. These data highlight unique features of magnetism in this and, potentially, other rare-earth intermetallics crystallizing with giant unit-cells where the exchange correlation lengths are much shorter when compared to the periodicity of the crystal lattice.

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Section: Magnetic Susceptibilitysupporting

confidence: 89%

Section: Magnetic Susceptibilitymentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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On the edge of periodicity: Unconventional magnetism of Gd117Co56.4Sn114.3

Liu

Ryan

Pecharsky

2017

Journal of Alloys and Compounds

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“…In a more recent report of the R 117 Co 52+ẟ Sn 112+ γ ( R = Y, La, Pr, Nd, Ho) analogues, all magnetic lanthanide elements display local magnetism, while Y 117 Co 56 Sn 115 manifests weak paramagnetism with a magnetic moment of 1.62 μ B /Co atom. Because of the magnetic and electrical properties discovered in this structure type, such as spin reorientation, spin glass behavior, and low lattice thermal conductivity (for Gd 117 Co 56 Sn 112 , κ L = 0.28 W · m –1 · K –1 ), we were motivated to grow single crystals suitable for determining the magnetic properties in a new Fe‐based analogue. Herein, we report the crystal structure and X‐ray photoelectron spectroscopy of Dy 122 Fe 55 Sn 101 .…”

Section: Introductionmentioning

confidence: 99%