The Enhanced Magnetic Transition Temperature in Double Perovskites A2FeMoO6(A=Ca, Sr and Ba) : Electron Doping Effects

Kim, J.; Yang, HX; Lee, B. W.

doi:10.4283/jmag.2005.10.1.010

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Heavily doped manganites with x ~ 0.5 have shown interesting physical properties, such as a charge-ordered CE-type antiferromagnetic (AFM) state, an orbital ordered A-type AFM state, and phase separation [2][3][4][5][6]. Such properties are presumably due to the equivalent density of Mn 3+ and Mn 4+ ions and the resulting competition between the FM double exchange and the AFM superexchange interactions [7].…”

Section: Introductionmentioning

confidence: 99%

⁵⁵Mn NMR study of the A‐type antiferromagnetic and metallic manganites La_1–xSr_xMnO₃ (0.5 ≤ x ≤ 0.6)

Shim

Lee

Dho

2007

Physica Status Solidi (b)

View full text Add to dashboard Cite

The microscopic magnetic and electronic properties of La1‐xSrxMnO3 (0.5 ≤ x ≤ 0.6) were investigated using 55Mn nuclear magnetic resonance (NMR). The NMR spectral intensity showed a large decrement as x increases above the boundary (x ∼ 0.52) of ferromagnetic (FM) and A‐type antiferromagnetic (AFM) phases. The spectrum of the samples shows a coexistence of two different phases, i.e., a metallic major phase and an insulating minor phase. The spin‐spin relaxation time strongly depends on the resonance frequency, indicating that the Shul‐Nakamura process by spin‐wave excitation is the dominant relaxation mechanism. This type of frequency dependence of the spin‐spin relaxation time was not observed in the CE‐type AFM manganite Nd0.5Sr0.5MnO3. The A‐type AFM spin structure and the Shul‐Nakamura relaxation process appears to be a unique characteristics of La1‐xSrxMnO3 (0.54 ≤ x ≤ 0.6) that is related to the 2D‐like spin coupling in a nearly tetragonal crystal structure. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

show abstract

Section: Introductionmentioning

confidence: 99%

⁵⁵Mn NMR study of the A‐type antiferromagnetic and metallic manganites La_1–xSr_xMnO₃ (0.5 ≤ x ≤ 0.6)

Shim

Lee

Dho

2007

Physica Status Solidi (b)

View full text Add to dashboard Cite

show abstract

Synthesis and Characterization of ALaFeNi0.5W0.5O6 (A= Sr or Ca), a New Structure Distorted Double Perovskite

Allah

Elhadi

Yassien

2013

AMR

View full text Add to dashboard Cite

The crystal structure of both samples has been solved by powder X-ray diffraction, data in the tetragonal space group I4/m (a= b= 5.55182 Å, c =7.86955 A0) for SrLaFeNi0.5W0.5O6sample and (a=b= 5.49129Å, c= 7.82233Å) for CaLaFeNi0.5W0.5O6 sample, and shows an almost perfect ordering between Ni2+ and W5+ cations at the B-site of the perovskite structure. The FTIR spectrometer used of the powders showed that the spectra of both are very similar, showing two strong and well-defined absorption bands, typical of perovskite materials.

show abstract

The Enhanced Magnetic Transition Temperature in Double Perovskites A₂FeMoO₆(A=Ca, Sr and Ba) : Electron Doping Effects

Cited by 2 publications

References 0 publications

⁵⁵Mn NMR study of the A‐type antiferromagnetic and metallic manganites La_1–xSr_xMnO₃ (0.5 ≤ x ≤ 0.6)

⁵⁵Mn NMR study of the A‐type antiferromagnetic and metallic manganites La_1–xSr_xMnO₃ (0.5 ≤ x ≤ 0.6)

Synthesis and Characterization of ALaFeNi<sub>0.5</sub>W<sub>0.5</sub>O<sub>6</sub> (A= Sr or Ca), a New Structure Distorted Double Perovskite

Contact Info

Product

Resources

About

The Enhanced Magnetic Transition Temperature in Double Perovskites A2FeMoO6(A=Ca, Sr and Ba) : Electron Doping Effects

Cited by 2 publications

References 0 publications

55Mn NMR study of the A‐type antiferromagnetic and metallic manganites La1–xSrxMnO3 (0.5 ≤ x ≤ 0.6)

55Mn NMR study of the A‐type antiferromagnetic and metallic manganites La1–xSrxMnO3 (0.5 ≤ x ≤ 0.6)

Synthesis and Characterization of ALaFeNi<sub>0.5</sub>W<sub>0.5</sub>O<sub>6</sub> (A= Sr or Ca), a New Structure Distorted Double Perovskite

Contact Info

Product

Resources

About

The Enhanced Magnetic Transition Temperature in Double Perovskites A₂FeMoO₆(A=Ca, Sr and Ba) : Electron Doping Effects

⁵⁵Mn NMR study of the A‐type antiferromagnetic and metallic manganites La_1–xSr_xMnO₃ (0.5 ≤ x ≤ 0.6)

⁵⁵Mn NMR study of the A‐type antiferromagnetic and metallic manganites La_1–xSr_xMnO₃ (0.5 ≤ x ≤ 0.6)