Devitrification and recrystallization of magnetic glass<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">La</mml:mi></mml:mrow><mml:mn>0.5</mml:mn></mml:msub><mml:msub><mml:mrow><mml:mi mathvariant="normal">Ca</mml:mi></mml:mrow><mml:mn>0.5</mml:mn></mml:msub><mml:mi mathvariant="normal">Mn</mml:mi><mml:msub><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>

Chaddah, P.; Kumar, Kranti; Banerjee, A.

doi:10.1103/physrevb.77.100402

Cited by 106 publications

(147 citation statements)

References 16 publications

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“…It is rather interesting that the subsequent field cycling portray M-H resembling soft FM state for both the samples. It may be noted that the initial increase in magnetization of LCMO, immediately above zero field is because of the untransformed FM phase which got arrested while cooling in zero field 8 . Thus both the samples show qualitatively similar anomaly in isothermal magnetization.…”

Section: Resultsmentioning

confidence: 99%

“…The La 0.5 Ca 0.5 MnO 3 sample is the same as used in Ref. 8,11 . The magnetization and resistivity measurements are performed using commercial setups (14 T physical property measurement systemvibrating sample magnetometer (PPMS-VSM), M/s.…”

Section: Methodsmentioning

confidence: 99%

“…We present in this paper detailed measurements on PCMAO to show that the glass like arrested AF-I state is similar to the 'magnetic glass' state recently reported in La 0.5 Ca 0.5 MnO 3 (LCMO) 8 , and can also be similarly devitrified and re-crystallized. The interesting contrast is that in LCMO the arrested state has FM order and is metallic, whereas in PCMAO the arrested state has AF order and is insulating.…”

Section: Introductionmentioning

confidence: 99%

“…We shall link this with our proposed phenomenology 9,10 . We have recently reported that while the arrested glass-like FM-M state in LCMO devitrifies on heating, cooling after annealing causes better recrystallization to AF-I state 8 . In section IIIC, we shall show similar results in PCMAO.…”

Section: Introductionmentioning

confidence: 99%

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Conversion of a glassy antiferromagnetic-insulating phase to an equilibrium ferromagnetic-metallic phase by devitrification and recrystallization in Al substituted Pr_0.5Ca_0.5MnO₃

Banerjee¹,

Kumar²,

Chaddah³

2008

J. Phys.: Condens. Matter

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100

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We show that Pr0.5Ca0.5MnO3 with 2.5% Al substitution and La0.5Ca0.5MnO3 (LCMO) exhibit qualitatively similar and visibly anomalous M-H curves at low temperature. Magnetic field causes a broad first-order but irreversible antiferromagnetic (AF)-insulating (I) to ferromagnetic (FM)-metallic (M) transition in both and gives rise to soft FM state. However, the low temperature equilibrium state of Pr0.5Ca0.5Mn0.975Al0.025O3 (PCMAO) is FM-M whereas that of LCMO is AF-I. In both the systems the respective equilibrium phase coexists with the other phase with contrasting order, which is not in equilibrium, and the cooling field can tune the fractions of the coexisting phases. It is shown earlier that the coexisting FM-M phase behaves like 'magnetic glass' in LCMO. Here we show from specially designed measurement protocols that the AF-I phase of PCMAO has all the characteristics of magnetic glassy states. It devitrifies on heating and also recrystallizes to equilibrium FM-M phase after annealing. This glass-like AF-I phase also shows similar intriguing feature observed in FM-M magnetic glassy state of LCMO that when the starting coexisting fraction of glass is larger, successive annealing results in larger fraction of equilibrium phase. This similarity between two manganite systems with contrasting magnetic orders of respective glassy and equilibrium phases points toward a possible universality.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Conversion of a glassy antiferromagnetic-insulating phase to an equilibrium ferromagnetic-metallic phase by devitrification and recrystallization in Al substituted Pr_0.5Ca_0.5MnO₃

Banerjee¹,

Kumar²,

Chaddah³

2008

J. Phys.: Condens. Matter

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100

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“…[1][2][3][4] Whereas the presence of dynamical features has been reported in many early studies, 3,4 an attempt to understand them and their dependence on the parameters controlling the M-I transition and their relationship with other associated phenomena such as hysteresis, phase separation has only started around the beginning of this century. [5][6][7][8][9] In these oxides, the family of rare earth nickelates (RNiO 3 , R =La) exhibits an M-I transition which can be tuned by application of internal or external pressure or strain. [10][11][12][13][14][15][16][17][18][19][20][21][22][23] The M-I transition, the hysteresis and their connection to slow dynamics have been studied in detail in bulk NdNiO 3 and PrNiO 3 .…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous nucleation and metal-insulator transition in epitaxial films of NdNiO3

Kumar

Rajeev

Kushwaha

et al. 2010

Journal of Applied Physics

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We have investigated the temperature driven first order metal-insulator transition in thin films of NdNiO3 and have compared it with the bulk behavior. The M-I transition of thin films is sensitive to epitaxial strain and a partial relaxation of epitaxial strain creates an inhomogeneous strain field in the films which broadens the M-I transition. Both the thin film and the bulk samples exhibit non equilibrium features in the transition regime which are attributed to the presence of high temperature metallic phases in their supercooled state. The degree of supercooling in the thin films is found to be much smaller than in the bulk which suggests that the metal insulator transition in the thin film occurs through heterogeneous nucleation.

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Phase‐coexistence and glass‐like behavior in magnetic and dielectric solids with long‐range order

Roy

Chaddah

2014

Physica Status Solidi (b)

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Phase‐coexistence in the manganese‐oxide compounds or manganites with colossal magneto‐resistance (CMR) has been generally considered to be an inhomogeneous ground state. An alternative explanation of phase‐coexistence as the manifestation of a disorder‐broadened first‐order magnetic phase transition being interrupted by the glass‐like arrest of kinetics is now gradually gaining ground. This kinetic arrest of a first‐order phase transitions, between two states with long‐range magnetic order, has actually been observed in various other classes of magnetic materials in addition to the CMR manganites. The underlying common features of this kinetic arrest of a first‐order phase transition are discussed in terms of the phenomenology of glasses. The possible manifestations of such glass‐like arrested states across disorder‐influenced first‐order phase transitions in dielectric solids and in multiferroic materials, are also discussed.

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Devitrification and recrystallization of magnetic glassLa0.5Ca0.5MnO3

Cited by 106 publications

References 16 publications

Conversion of a glassy antiferromagnetic-insulating phase to an equilibrium ferromagnetic-metallic phase by devitrification and recrystallization in Al substituted Pr_0.5Ca_0.5MnO₃

Conversion of a glassy antiferromagnetic-insulating phase to an equilibrium ferromagnetic-metallic phase by devitrification and recrystallization in Al substituted Pr_0.5Ca_0.5MnO₃

Heterogeneous nucleation and metal-insulator transition in epitaxial films of NdNiO3

Phase‐coexistence and glass‐like behavior in magnetic and dielectric solids with long‐range order

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Devitrification and recrystallization of magnetic glassLa0.5Ca0.5MnO3

Cited by 106 publications

References 16 publications

Conversion of a glassy antiferromagnetic-insulating phase to an equilibrium ferromagnetic-metallic phase by devitrification and recrystallization in Al substituted Pr0.5Ca0.5MnO3

Conversion of a glassy antiferromagnetic-insulating phase to an equilibrium ferromagnetic-metallic phase by devitrification and recrystallization in Al substituted Pr0.5Ca0.5MnO3

Heterogeneous nucleation and metal-insulator transition in epitaxial films of NdNiO3

Phase‐coexistence and glass‐like behavior in magnetic and dielectric solids with long‐range order

Contact Info

Product

Resources

About

Conversion of a glassy antiferromagnetic-insulating phase to an equilibrium ferromagnetic-metallic phase by devitrification and recrystallization in Al substituted Pr_0.5Ca_0.5MnO₃

Conversion of a glassy antiferromagnetic-insulating phase to an equilibrium ferromagnetic-metallic phase by devitrification and recrystallization in Al substituted Pr_0.5Ca_0.5MnO₃