Influence of cooling field on field induced magnetic states in Ca3Co2O6 compound

De, Sayan; Banerjee, A.

doi:10.1016/j.physb.2019.07.033

Cited by 6 publications

(7 citation statements)

References 16 publications

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“…Such type of hysteric transformation suggests a broad first-order phase transition. It has already been interpreted that this spin system has a one-dimensional character at high T (25 K< T <120 K) resulting from ferromagnetically coupled spins along chain direction [31,32]. Therefore, this high T 1D chains transform to 3D-FIM ground state with decreasing T at lower field.…”

Section: Resultsmentioning

confidence: 91%

“…FCC and FCW/ZFC, M (T) curves, demonstrate a thermal hysteresis in the range, T ∼ 12-25 K which is discussed earlier in refs. [31,32]. Such type of hysteric transformation suggests a broad first-order phase transition.…”

Section: Resultsmentioning

confidence: 98%

“…This irreversibility signifies that high T 1D chains partially convert into 3D-FIM state. It ultimately results in co-existence of equilibrium 3D-FIM phase with 1D FM chains at low T [31,32]. There are many systems including half doped manganite, heusler and shape memory alloys etc.…”

Section: Resultsmentioning

confidence: 99%

“…At the intermediate high T, spins (S=2) are interpreted to be aligned along chain direction due to strong-FM intrachain interaction and resulting one-dimensional (1D) behavior of this system [21,25]. Whereas, these 1D FM chains are ordered in three-dimensional (3D) ferrimagnetic (FIM) state at low T and further, this 3D-FIM state transforms to 3D-FM state at higher H [18,19,[25][26][27][28][29][30][31][32][33]. However, there exists many controversies in this TL Ising system and one of the intensely debated issue is the magnetic ground state.…”

Section: Introductionmentioning

confidence: 99%

“…However, there exists many controversies in this TL Ising system and one of the intensely debated issue is the magnetic ground state. Some earlier studies on CCO compound suggest existence of a FIM like state at low T [18,19,[25][26][27][28][29][30][31][32][33] whereas few recent reports infer spin density wave like ordering of low T state which slowly transforms to commensurate antiferromagnetic state [20][21][22][23][24][34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

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Three-dimensional ferrimagnetic ground state of triangular-lattice system Ca3Co2O6

De¹,

Reddy²,

Banerjee³

2021

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High temperature one-dimensional (1D) ferromagnetic (FM) chains in Ca3Co2O6 spin system are subjected to a magnetic field and temperature induced first order phase transition (FOPT) to 3Dferrimagnetic (FIM) ground state with decrease in temperature (T). Weak-FM interaction of thirdnearest-neighbor (nn) interchain removes the frustration effect arising from antiferromagnetic (AFM) interactions of first-nn and second-nn interchains in the underlying triangular-lattice resulting a 3D-FIM ordering of 1D FM chains at low T. However, hindered kinetics of FOPT partially masks this tranformation giving rise to coexistence of non-interacting 1D FM chains with 3D-FIM state at low-T. The existence of all these couplings is further confirmed here by random substitution of S = 5/2 magnetic-impurity into the spin chain of original system. It reveals weakening of FM interactions of both intrachain and third-nn surrounding chains respectively without significant modulation in the AFM coupling of first-nn and second-nn interchains. Thus, influence of AFM interactions is enhanced as compared to effective FM coupling with increase of S = 5/2 impurity content resulting instability of 3D long-range FIM state at low T.

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Section: Resultsmentioning

confidence: 91%

Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%