57Fe and 151Eu Mössbauer study of charge disproportionation and magnetic properties in Eu1/3Sr2/3FeO3

Huang, Yunhao; Chen, Nan; Lin, Guo‐Qiang; Hsia, Yuanfu

doi:10.1016/j.jallcom.2008.06.051

Cited by 7 publications

(6 citation statements)

References 18 publications

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“…Finally, we note that there is no anomaly at T N in the resistivity curve for Eu 1/3 Sr 2/3 FeO 3 . However, the Mössbauer spectroscopy has revealed strong changes between the spectra obtained at room temperature and below T N [7]. These variations are similar to the ones reported for La or Nd-based compounds [2,9] so they could have a common origin.…”

Section: Methodssupporting

confidence: 77%

“…Few studies have been devoted to the properties of the ferrites with heavy RE, maybe due to the absence of metal-insulator transition. Nevertheless, Mössbauer spectra, similar to the La 1/3 Sr 2/3 FeO 3 ones, have recently been reported for Eu 1/3 Sr 2/3 FeO 3 [7], a compound without metal-insulator transition regarding the phase diagram of ref. 1.…”

Section: Introductionmentioning

confidence: 54%

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Structural, electrical and magnetic properties of RE_1/3Sr_2/3FeO₃compounds (RE = La, Pr, Nd, Eu and Gd)

Blasco

Cuartero

Garcı́a

et al. 2010

J. Phys.: Conf. Ser.

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We report results of structural, magnetic and electrical measurements performed on the perovskite RE 1/3 Sr 2/3 FeO 3 compounds (RE= rare earth). Samples with light RE (La, Pr or Nd) show a metal-insulator-like transition coupled to an antiferromagnetic ordering upon cooling. This transition is believed to be brought about by a charge ordering of Fe 3+ and Fe 5+ ions in the low temperature phase accompanied by the concomitant structural transition. The replacing of light RE by heavy ones (Gd or Eu) gives rise to high-resistivity compounds with no metal-insulator transition. However, the magnetic transition remains at low temperatures. A previous Mössbauer study reports similar behaviour for RE=Eu compound. This suggests that variations in Mössbauer spectra may be of a magnetic origin in light RE compounds and not coming from a full charge disproportionation of Fe 4+ as deduced previously.

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Section: Methodssupporting

confidence: 77%

Section: Introductionmentioning

confidence: 54%

Structural, electrical and magnetic properties of RE_1/3Sr_2/3FeO₃compounds (RE = La, Pr, Nd, Eu and Gd)

Blasco

Cuartero

Garcı́a

et al. 2010

J. Phys.: Conf. Ser.

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“…Moreover, the presence of Fe 5+ below T MI is not consistent with the x-ray-absorption data [6], and resonant x-ray scattering measurements indicate that the CD is not significant [7]. Furthermore, the R = Eu sample is reported to have a change of Mössbauer response across the magnetic ordering transition similar to that of the * fei.li@psi.ch R = La compound [8], which is surprising given the absence of MI transition. The change of the Mössbauer response for both compounds was then ascribed to the long-range magnetic ordering with two types of magnetic interactions [9].…”

Section: Introductionmentioning

confidence: 84%

Revisiting the magnetic structure and charge ordering in La1/3Sr2/3FeO3 by neutron powder diffraction and Mössbauer spectroscopy

Pomjakushin

Mazet

et al. 2018

Phys. Rev. B

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The magnetic ordering of La 1/3 Sr 2/3 FeO 3 perovskite has been studied by neutron powder diffraction and 57 Fe Mössbauer spectroscopy down to 2 K. From symmetry analysis, a chiral helical model and a collinear model are proposed to describe the magnetic structure. Both are commensurate, with propagation vector k = (0,0,1) in R3c space group. In the former model, the magnetic moments of Fe adopt the magnetic space group P 3 2 21 and have helical and antiferromagnetic ordering propagating along the c axis. The model allows only a single Fe site, with a magnetic moment of 3.46(2)μ B at 2 K. In the latter model, the magnetic moments of iron ions adopt the magnetic space group C2/c or C2 /c and are aligned collinearly. The model allows the presence of two inequivalent Fe sites with magnetic moments of amplitude 3.26(3)μ B and 3.67(2)μ B , respectively. The neutron-diffraction pattern is equally well fitted by either model. The Mössbauer spectroscopy study suggests a single charge state Fe 3.66+ above the magnetic transition and a charge disproportionation into Fe (3.66−ζ )+ and Fe (3.66+2ζ )+ below the magnetic transition. The compatibility of the magnetic structure models with the Mössbauer spectroscopy results is discussed.

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“…Moreover, the presence of Fe 5+ below T MI is not consistent with the X-ray absorption data [6], and resonant X-ray scattering measurements indicate that the CD is not significant [7]. Furthermore, the R = Eu sample is reported to have a change of Mössbauer response aross the magnetic ordering transition similar to that of the R = La compound [8], which is surprising given the absence of MI transition. The change of the Mössbauer response for both compounds was then ascribed to the long-range magnetic ordering with two types of magnetic interactions [9].…”

Section: Introductionmentioning

confidence: 81%

Revisiting the Magnetic Structure and Charge Ordering in La$_{1/3}$Sr$_{2/3}$FeO$_3$ by Neutron Powder Diffraction and Mössbauer Spectroscopy

Li,

Pomjakushin,

Mazet

et al. 2018

Preprint

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The magnetic ordering of La 1/3 Sr 2/3 FeO 3 perovskite has been studied by neutron powder diffraction and 57 Fe Mössbauer spectroscopy down to 2 K. From symmetry analysis, a chiral helical model and a collinear model are proposed to describe the magnetic structure. Both are commensurate, with propagation vector k = (0,0,1) in R3c space group. In the former model, the magnetic moments of Fe adopt the magnetic space group P 3 2 21 and have helical and antiferromagnetic ordering propagating along the c axis. The model allows only single Fe site, with a magnetic moment of 3.46(2) µ B at 2 K. In the latter model, the magnetic moments of iron ions adopt the magnetic space group C2/c or C2 ′ /c ′ and are aligned collinearly. The model allows the presence of two inequivalent Fe sites with magnetic moments of amplitude 3.26(3) µ B and 3.67(2) µ B , respectively.The neutron diffraction pattern is equally well fitted by either model. The Mössbauer spectroscopy study suggests a single charge state Fe 3.66+ above the magnetic transition and a charge disproportionation into Fe (3.66−ζ)+ and Fe (3.66+2ζ)+ below the magnetic transition. The compatibility of the magnetic structure models with the Mössbauer spectroscopy results is discussed.

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57Fe and 151Eu Mössbauer study of charge disproportionation and magnetic properties in Eu1/3Sr2/3FeO3

Cited by 7 publications

References 18 publications

Structural, electrical and magnetic properties of RE_1/3Sr_2/3FeO₃compounds (RE = La, Pr, Nd, Eu and Gd)

Structural, electrical and magnetic properties of RE_1/3Sr_2/3FeO₃compounds (RE = La, Pr, Nd, Eu and Gd)

Revisiting the magnetic structure and charge ordering in La1/3Sr2/3FeO3 by neutron powder diffraction and Mössbauer spectroscopy

Revisiting the Magnetic Structure and Charge Ordering in La$_{1/3}$Sr$_{2/3}$FeO$_3$ by Neutron Powder Diffraction and Mössbauer Spectroscopy

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57Fe and 151Eu Mössbauer study of charge disproportionation and magnetic properties in Eu1/3Sr2/3FeO3

Cited by 7 publications

References 18 publications

Structural, electrical and magnetic properties of RE1/3Sr2/3FeO3compounds (RE = La, Pr, Nd, Eu and Gd)

Structural, electrical and magnetic properties of RE1/3Sr2/3FeO3compounds (RE = La, Pr, Nd, Eu and Gd)

Revisiting the magnetic structure and charge ordering in La1/3Sr2/3FeO3 by neutron powder diffraction and Mössbauer spectroscopy

Revisiting the Magnetic Structure and Charge Ordering in La$_{1/3}$Sr$_{2/3}$FeO$_3$ by Neutron Powder Diffraction and Mössbauer Spectroscopy

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Structural, electrical and magnetic properties of RE_1/3Sr_2/3FeO₃compounds (RE = La, Pr, Nd, Eu and Gd)

Structural, electrical and magnetic properties of RE_1/3Sr_2/3FeO₃compounds (RE = La, Pr, Nd, Eu and Gd)