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Chowki, S.; Rayaprol, Sudhindra; Mukhopadhyay, Amartya; Mohapatra, Niharika

doi:10.1103/physrevb.92.214416

Cited by 11 publications

(7 citation statements)

References 33 publications

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“…The value of the fitting exponent zν and T f0 was found to be ~ 4±0.2 and 17 K respectively.Interestingly the microscopic flipping time τ 0 is found to be 10 −9 sec which is a couple of orders higher than those observed for atomic SG (~ 10 −13 s) [4,5,8]. The observed values were similar to that noted for systems showing superspin glass behavior [13,[38][39]. This implies that the dynamics in Er 5 Pd 2 is due to the presence of strongly interacting superspins rather than individual spins.…”

Section: Ac Susceptibility Measurementsupporting

confidence: 54%

“…For calculate the χ nl , the magnetization data was collected by using the protocol, as described in [39,41]. Figure 6(a) shows the temperature dependent field cooled magnetic susceptibility (M/H) at different applied field.…”

Section: Nonlinear DC Magnetic Susceptibilitymentioning

confidence: 99%

“…To further characterize this low temperature phase, nonlinear dc susceptibility was calculated since as far as dynamics of phase transition is concerned, this tool is a more powerful technique, as it gives the details of local magnetic behavior. The nonlinear parts of DC magnetic susceptibilities were obtained from the field and temperature dependence of magnetization by using the following expression [40][41][42]:…”

Section: Nonlinear DC Magnetic Susceptibilitymentioning

confidence: 99%

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Complex magnetic behaviour and evidence of a superspin glass state in the binary intermetallic compound Er₅Pd₂

Sharma

Yadav

Mukherjee

2018

J. Phys.: Condens. Matter

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The binary intermetallic compound ErPd has been investigated using dc and ac magnetic susceptibilities, magnetic memory effect, isothermal magnetization, non-linear dc susceptibility, heat capacity and magnetocaloric effect studies. Interestingly, even though the compound does not show geometrical frustration it undergoes glassy magnetic phase transition below 17.2 K. Investigation of dc magnetization and heat capacity data divulged absence of long-ranged magnetic ordering. Through the magnetic memory effect, time dependent magnetization and ac susceptibility studies it was revealed that the compound undergoes glass-like freezing below 17.2 K. Analysis of frequency dependence of this transition temperature through scaling and Arrhenius law; along with the Mydosh parameter indicate, that the dynamics in ErPd are due to the presence of strongly interacting superspins rather than individual spins. This phase transition was further investigated by non-linear dc susceptibility and was characterized by static critical exponents γ and δ. Our results indicate that this compound shows the signature of superspin glass at low temperature. Additionally, both conventional and inverse magnetocaloric effect was observed with a large value of magnetic entropy change and relative cooling power. Our results suggest that ErPd can be classified as a superspin glass system with large magnetocaloric effect.

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Section: Ac Susceptibility Measurementsupporting

confidence: 54%

Section: Nonlinear DC Magnetic Susceptibilitymentioning

confidence: 99%

Section: Nonlinear DC Magnetic Susceptibilitymentioning

confidence: 99%

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Complex magnetic behaviour and evidence of a superspin glass state in the binary intermetallic compound Er₅Pd₂

Sharma

Yadav

Mukherjee

2018

J. Phys.: Condens. Matter

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“…; where χ 1 is the linear magnetic susceptibility, and the higher order terms of χ are the non-linear magnetic susceptibility. The data for this measurement was carried out using the protocol described in Ref [22,35]. Fig.…”

Section: Evidences Of the Presence Of Double Glass Transitionmentioning

confidence: 99%

Evidence of large magnetic cooling power and double glass transition in Tb5Pd2

Sharma

Mukherjee

2018

Journal of Magnetism and Magnetic Materials

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We report a detailed dc magnetization, ac susceptibility and magnetocaloric properties of a binary intermetallic compound Tb 5 Pd 2 . Our dc magnetization and heat capacity results reveal absence of long range ordering in this compound. Two distinct frequency dependent peaks (T f1~6 0 K and T f2~2 1 K) had been observed in the ac-susceptibility. Analysis of these frequency dependent peaks by Mydosh parameter, power and Vogel-Fulcher law reveals that around T f1 the compound is at the boundary of spin glass (SG) like-cluster glass (CG) like state and it undergoes a cluster glass-like freezing below T f2 . Zero field cooled memory effect and non-linear dc susceptibility also confirmed the presence of two glassy transitions in this compound. The transformation from SG/CG boundary to CG phase was also confirmed by the magnetic relaxation measurement and Arrott plots study. Remarkably, a significant magnetic entropy change was also observed in the temperature range of 60-120 K.Additionally a large relative cooling power also observed in this compound. The observed value is comparable to those of promising refrigerant material in this temperature range and is quite notable as in this compound magnetic hysteresis was absent in this temperature range. It was noted that in this compound short-range interactions persist up to a higher temperature above T f1 and this is responsible for the observation of significant MCE over a wide temperature range. Our studies suggest that this compound is an example of a glassy magnetic compound which shows large magnetocaloric effect.

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“…Sr 2 Cu(Te 1−x W x )O 6 ) as well as for honeycomb [18,21] lattices. The underlying lattice structure is, however, very prominent here as recent couple of studies have shown a coexistence of QSL state with different spin-ordered state, which is believed due to complex magnetic interactions originating from host lattice as well as from presence of multiple magnetic elements [25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Coexistence of spin liquid state and magnetic correlations in 3d-5d based triangular-lattice antiferromagnet Sr₃CuIr₂O₉

Gondh,

Kumar,

Saravanan

et al. 2023

J. Phys.: Condens. Matter

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Here, we report detailed lattice structure, magnetization (dc and ac) and speciﬁc heat measurements on a 3d-5d based new triple-perovskite material Sr3CuIr2O9. The Sr/Cu forms a layered structure of triangular-lattice while the Ir forms Ir2O9 dimers which lie in chain as well as simultaneously makes layered triangular-lattice with neighboring atoms. Due to random site-sharing with Sr2+, the Cu2+ (3d9, spin-1/2) forms a diluted magnetic lattice, thus giving a disordered in-plane exchange interaction. Opposed to conventional Jeffmodel, the Ir5+ (5d4, Jeff= 0) is believed to be magnetic here which participates both in-chain and in-plane magnetic interactions. This complex lattice structure driven competing exchange interaction leads the ground state to a gapless quantum-spin-liquid state which coexists with (weak) ferromagnetic spin correlations. While underling the importance of spin state (spin-1/2), we believe that the combined eﬀect of lattice structure, geometric frustration, spin-orbit coupling and spin state has given rise this interesting ground state in this material.

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Coexistence of spin glass type freezing and cooperative paramagnetic state inSr3MnTiO7

Cited by 11 publications

References 33 publications

Complex magnetic behaviour and evidence of a superspin glass state in the binary intermetallic compound Er₅Pd₂

Complex magnetic behaviour and evidence of a superspin glass state in the binary intermetallic compound Er₅Pd₂

Evidence of large magnetic cooling power and double glass transition in Tb5Pd2

Coexistence of spin liquid state and magnetic correlations in 3d-5d based triangular-lattice antiferromagnet Sr₃CuIr₂O₉

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Coexistence of spin glass type freezing and cooperative paramagnetic state inSr3MnTiO7

Cited by 11 publications

References 33 publications

Complex magnetic behaviour and evidence of a superspin glass state in the binary intermetallic compound Er5Pd2

Complex magnetic behaviour and evidence of a superspin glass state in the binary intermetallic compound Er5Pd2

Evidence of large magnetic cooling power and double glass transition in Tb5Pd2

Coexistence of spin liquid state and magnetic correlations in 3d-5d based triangular-lattice antiferromagnet Sr3CuIr2O9

Contact Info

Product

Resources

About

Complex magnetic behaviour and evidence of a superspin glass state in the binary intermetallic compound Er₅Pd₂

Complex magnetic behaviour and evidence of a superspin glass state in the binary intermetallic compound Er₅Pd₂

Coexistence of spin liquid state and magnetic correlations in 3d-5d based triangular-lattice antiferromagnet Sr₃CuIr₂O₉