(La2/5Ba2/5Ca1/5)(Mn (2/5)-xNixTi3/5)O3: Rietveld studies, dielectric and magnetic properties of new perovskite-related oxides

Pika Jha; Saroj L. Samal; Kandalam V. Ramanujachary; Samuel E. Lofland; Ashok K. Ganguli

doi:10.1007/BF02706344

(La_2/5Ba_2/5Ca_1/5)(Mn _(2/5)-xNi_xTi_3/5)O₃: Rietveld studies, dielectric and magnetic properties of new perovskite-related oxides

Pika Jha, Saroj L. Samal, Kandalam V. Ramanujachary, Samuel E. Lofland, Ashok K. Ganguli

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Abstract

Oxides of the type (La_2/5Ba_2/5Ca _1/5)(Mn_(2/5)-xNi_xTi_3/5)O ₃ (0 ≤ x ≤ 0·4) have been synthesized by the ceramic route. All the above oxides have been found to crystallize in the cubic perovskite structure. Rietveld refinement of the Ni-based oxide, (La _2/5Ba_2/5Ca_1/5)(Ni_2/5Ti _3/5)O₃ gave rise to a composition (La _0·44Ba_0·38Ca_0·18) (Ni _0·42Ti_0·58)O_2·85(6) and the refined lattice parameter obtained was 3·9411(2) Å (space group Pm3̄m; R(F²) = 0·026, R_p = 0·074, wR_p = 0·087). A shift from antiferromagnetic to paramagnetic behaviour is observed with increase in nickel concentration, the Mn-rich phases showing antiferromagnetism around 5 K. There is a systematic decrease in the dielectric constant, ε and loss tangent with increase in Ni concentration (from ε = 592 for x = 0 to ε = 78 for x = 0·4).

Original language	English (US)
Pages (from-to)	571-577
Number of pages	7
Journal	Bulletin of Materials Science
Volume	28
Issue number	6
DOIs	https://doi.org/10.1007/BF02706344
State	Published - Oct 2005

All Science Journal Classification (ASJC) codes

General Materials Science
Mechanics of Materials

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10.1007/BF02706344

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@article{6aef1e16f7da470d985c4e3e415d31be,

title = "(La2/5Ba2/5Ca1/5)(Mn (2/5)-xNixTi3/5)O3: Rietveld studies, dielectric and magnetic properties of new perovskite-related oxides",

abstract = "Oxides of the type (La2/5Ba2/5Ca 1/5)(Mn(2/5)-xNixTi3/5)O 3 (0 ≤ x ≤ 0·4) have been synthesized by the ceramic route. All the above oxides have been found to crystallize in the cubic perovskite structure. Rietveld refinement of the Ni-based oxide, (La 2/5Ba2/5Ca1/5)(Ni2/5Ti 3/5)O3 gave rise to a composition (La 0·44Ba0·38Ca0·18) (Ni 0·42Ti0·58)O2·85(6) and the refined lattice parameter obtained was 3·9411(2) {\AA} (space group Pm{\=3}m; R(F2) = 0·026, Rp = 0·074, wRp = 0·087). A shift from antiferromagnetic to paramagnetic behaviour is observed with increase in nickel concentration, the Mn-rich phases showing antiferromagnetism around 5 K. There is a systematic decrease in the dielectric constant, ε and loss tangent with increase in Ni concentration (from ε = 592 for x = 0 to ε = 78 for x = 0·4).",

author = "Pika Jha and Samal, {Saroj L.} and Ramanujachary, {Kandalam V.} and Lofland, {Samuel E.} and Ganguli, {Ashok K.}",

note = "Funding Information: to acknolwedge partial support from the NSF MRSE1C999J . Solid State Che1m4.8 479 Grant no. DMR -0008008. 2002J . Mater. Chem1.22798Rodriguez E, LopMez L, Campo J, VeigMa L and Pico C",

year = "2005",

month = oct,

doi = "10.1007/BF02706344",

language = "English (US)",

volume = "28",

pages = "571--577",

journal = "Bulletin of Materials Science",

issn = "0250-4707",

publisher = "Indian Academy of Sciences",

number = "6",

}

TY - JOUR

T1 - (La2/5Ba2/5Ca1/5)(Mn (2/5)-xNixTi3/5)O3

T2 - Rietveld studies, dielectric and magnetic properties of new perovskite-related oxides

AU - Jha, Pika

AU - Samal, Saroj L.

AU - Ramanujachary, Kandalam V.

AU - Lofland, Samuel E.

AU - Ganguli, Ashok K.

N1 - Funding Information: to acknolwedge partial support from the NSF MRSE1C999J . Solid State Che1m4.8 479 Grant no. DMR -0008008. 2002J . Mater. Chem1.22798Rodriguez E, LopMez L, Campo J, VeigMa L and Pico C

PY - 2005/10

Y1 - 2005/10

N2 - Oxides of the type (La2/5Ba2/5Ca 1/5)(Mn(2/5)-xNixTi3/5)O 3 (0 ≤ x ≤ 0·4) have been synthesized by the ceramic route. All the above oxides have been found to crystallize in the cubic perovskite structure. Rietveld refinement of the Ni-based oxide, (La 2/5Ba2/5Ca1/5)(Ni2/5Ti 3/5)O3 gave rise to a composition (La 0·44Ba0·38Ca0·18) (Ni 0·42Ti0·58)O2·85(6) and the refined lattice parameter obtained was 3·9411(2) Å (space group Pm3̄m; R(F2) = 0·026, Rp = 0·074, wRp = 0·087). A shift from antiferromagnetic to paramagnetic behaviour is observed with increase in nickel concentration, the Mn-rich phases showing antiferromagnetism around 5 K. There is a systematic decrease in the dielectric constant, ε and loss tangent with increase in Ni concentration (from ε = 592 for x = 0 to ε = 78 for x = 0·4).

AB - Oxides of the type (La2/5Ba2/5Ca 1/5)(Mn(2/5)-xNixTi3/5)O 3 (0 ≤ x ≤ 0·4) have been synthesized by the ceramic route. All the above oxides have been found to crystallize in the cubic perovskite structure. Rietveld refinement of the Ni-based oxide, (La 2/5Ba2/5Ca1/5)(Ni2/5Ti 3/5)O3 gave rise to a composition (La 0·44Ba0·38Ca0·18) (Ni 0·42Ti0·58)O2·85(6) and the refined lattice parameter obtained was 3·9411(2) Å (space group Pm3̄m; R(F2) = 0·026, Rp = 0·074, wRp = 0·087). A shift from antiferromagnetic to paramagnetic behaviour is observed with increase in nickel concentration, the Mn-rich phases showing antiferromagnetism around 5 K. There is a systematic decrease in the dielectric constant, ε and loss tangent with increase in Ni concentration (from ε = 592 for x = 0 to ε = 78 for x = 0·4).

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JO - Bulletin of Materials Science

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ER -

(La_2/5Ba_2/5Ca_1/5)(Mn _(2/5)-xNi_xTi_3/5)O₃: Rietveld studies, dielectric and magnetic properties of new perovskite-related oxides

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