Specific heat study of La1–xCaxMnO3 (0.5 ≤ x ≤ 0.9) with antiferromagnetic ground state

Pissas, M.; Koumoulis, D.

doi:10.1063/1.4998799

Cited by 4 publications

(2 citation statements)

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“…This result is not much different from that obtained by L. Ghivelder et al [22] which is about 3 mJ.mol -1 .K -2 . The specific heat of both samples does have similarities, as is expected based upon their identical crystal structure [2].…”

Section: C(t) = γT + β 3 T 3 + β 5 T 5 + δT N + αT -2 (3)supporting

confidence: 60%

“…are still intensively studied. Works focusing on various physical properties of the compounds, such as magnetoresistance (MR), crystal structure change, metal-insulator transition, specific heat, large magneto-caloric effect, and high electrical conductivity have been reported [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. These rare … (T MI ) of about 243 K. In case of T>T MI , the resisitivity as a function of temperature could be described by two different models, namely the variable range hopping (VRH) model or Arhenius model and the adiabatic small polaron hopping (ASPH) model but more in line with the second model (ASPH).…”

Section: Introduction mentioning

confidence: 99%

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The Effects of External Magnetic Field on the Physical Properties of La0.41Ca0.59Mn1-xCuxO3 with x = 0.06 and 0.15 in the Temperature Range of 100 – 300 K

et al. 2019

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This work investigated the crystal structure, resistivity and specific heat of La 0.41 Ca 0.59 Mn 1-x Cu x O 3 with x = 0.06 and 0.15. The samples were prepared by a solid reaction method and in milling with high energy milling (HEM) of 700 rpm for ten hours. Neutron scattering with high resolution powder diffraction (HRPD) is used to analyze the phase and crystal structure. For resistivity analysis, four point probes are used, and SQUID Quantum Design is used for specific heat analysis in temperatures range of 100 -300 K. In all cases, the sample has an orthorhombic crystal structure with a space group Pnma. The influence of a magnetic field on the specific heat and resistivity is also determined as a function of temperature. The resistivity increases in the presence of an external magnetic field. At the temperature less than 184 K, the resisitivity follows the Arhenius model (ln R varies as 1/T 0.25 ) while at higher temperatures it fits the metal-semiconductor model (ln R varies as 1/T). The electronic specific heat parameter γ varies with magnetic field at x = 0.06, but not at x = 0.15. earths manganite compounds have found a wide range of application, such as a mild hyperthermia mediator [1], magnetic refrigeration technology near room temperature [5], and a fuel cell cathode [7][8][9].Until now, the results of measurements and analysis of this material still make a lot of differences. Suppose La 1-x Sr x MnO 3 will change from orthorhombic (x<0.2) to rhombohedral (x>0.2) [1], at low temperatures, La 1-x Ca x MnO 3 structure will change from cubic to rhombohedral then to orthorhombic [2], while La 0.65 Ca 0.35-x Ba x MnO 3 has a rhombohedral crystal structure for x<0.15 and a cubic for 0.15

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Section: C(t) = γT + β 3 T 3 + β 5 T 5 + δT N + αT -2 (3)supporting

confidence: 60%

Section: Introduction mentioning

confidence: 99%

The Effects of External Magnetic Field on the Physical Properties of La0.41Ca0.59Mn1-xCuxO3 with x = 0.06 and 0.15 in the Temperature Range of 100 – 300 K

et al. 2019

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Impact of hydrogenation on the structural, dielectric and magnetic properties of La0.5Ca0.5MnO3

et al. 2021

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Normal and inverse magnetocaloric effect in colossal magnetoresistive electron-doped manganites R0.15Ca0.85MnO3 (R = Y, Gd and Dy)

Dhal

Andharia

Shukla

et al. 2019

Journal of Magnetism and Magnetic Materials

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Specific heat study of La_1–_xCa_xMnO₃ (0.5 ≤ x ≤ 0.9) with antiferromagnetic ground state

Cited by 4 publications

References 50 publications

The Effects of External Magnetic Field on the Physical Properties of La<sub>0.41</sub>Ca<sub>0.59</sub>Mn<sub>1-x</sub>Cu<sub>x</sub>O<sub>3</sub> with x = 0.06 and 0.15 in the Temperature Range of 100 – 300 K

The Effects of External Magnetic Field on the Physical Properties of La<sub>0.41</sub>Ca<sub>0.59</sub>Mn<sub>1-x</sub>Cu<sub>x</sub>O<sub>3</sub> with x = 0.06 and 0.15 in the Temperature Range of 100 – 300 K

Impact of hydrogenation on the structural, dielectric and magnetic properties of La0.5Ca0.5MnO3

Normal and inverse magnetocaloric effect in colossal magnetoresistive electron-doped manganites R0.15Ca0.85MnO3 (R = Y, Gd and Dy)

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Specific heat study of La1–xCaxMnO3 (0.5 ≤ x ≤ 0.9) with antiferromagnetic ground state

Cited by 4 publications

References 50 publications

The Effects of External Magnetic Field on the Physical Properties of La<sub>0.41</sub>Ca<sub>0.59</sub>Mn<sub>1-x</sub>Cu<sub>x</sub>O<sub>3</sub> with x = 0.06 and 0.15 in the Temperature Range of 100 – 300 K

The Effects of External Magnetic Field on the Physical Properties of La<sub>0.41</sub>Ca<sub>0.59</sub>Mn<sub>1-x</sub>Cu<sub>x</sub>O<sub>3</sub> with x = 0.06 and 0.15 in the Temperature Range of 100 – 300 K

Impact of hydrogenation on the structural, dielectric and magnetic properties of La0.5Ca0.5MnO3

Normal and inverse magnetocaloric effect in colossal magnetoresistive electron-doped manganites R0.15Ca0.85MnO3 (R = Y, Gd and Dy)

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Specific heat study of La_1–_xCa_xMnO₃ (0.5 ≤ x ≤ 0.9) with antiferromagnetic ground state

Normal and inverse magnetocaloric effect in colossal magnetoresistive electron-doped manganites R0.15Ca0.85MnO3 (R = Y, Gd and Dy)