Formation and properties of oxide phases in the system Er2O3-Fe2O3

M. Ristić, S. Popović, S. Musić, I. Czakó-Nagy, A. Vértes, M. Maiorov, A. Petrov

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Mixed hydroxide, 3Er(OH)3 + 5Fe(OH)3, was prepared by chemical coprecipitation. X-Ray diffraction showed that the samples obtained by heating the mixed hydroxide at 650° C were amorphous, and contained Er2O3, α-Fe2O3, ErFeO3 and Er3Fe5O12 (ErIG) at 750°C. The changes in phase composition of the samples were also monitored by FT-IR spectroscopy. The Mössbauer spectrum of mixed hydroxide, 3Er(OH)3 + 5Fe(OH)3, at RT was characterized with a quadrupole doublet (δFe = 0.38, Δ = 0.80, and Γ = 0.50 mm s-1). After heating the starting material up to 650°C, the superposition of two quadrupole doublets and of a sextet of very small intensity with H=506 kOe was observed. This result indicated that the amorphous fraction, as detected by XRD, actually contained additional Fe-bearing oxide phase of very fine particles and probably of poor crystallinity. The sample obtained at 1300°C was charcaterized by two hyperfine magnetic fields at RT with Hd = 394 and Ha = 489 kOe corresponding to ErIG. The results of magnetometric measurements of selected samples were discussed.

Original languageEnglish
Pages (from-to)27-33
Number of pages7
JournalJournal of Alloys and Compounds
Volume256
Issue number1-2
Publication statusPublished - Jul 5 1997

Fingerprint

Oxides
Bearings (structural)
Heating
Coprecipitation
Phase composition
Infrared spectroscopy
Magnetic fields
X ray diffraction
hydroxide ion

Keywords

  • Hydroxides
  • Oxide phases

ASJC Scopus subject areas

  • Metals and Alloys

Cite this

Ristić, M., Popović, S., Musić, S., Czakó-Nagy, I., Vértes, A., Maiorov, M., & Petrov, A. (1997). Formation and properties of oxide phases in the system Er2O3-Fe2O3. Journal of Alloys and Compounds, 256(1-2), 27-33.

Formation and properties of oxide phases in the system Er2O3-Fe2O3. / Ristić, M.; Popović, S.; Musić, S.; Czakó-Nagy, I.; Vértes, A.; Maiorov, M.; Petrov, A.

In: Journal of Alloys and Compounds, Vol. 256, No. 1-2, 05.07.1997, p. 27-33.

Research output: Contribution to journalArticle

Ristić, M, Popović, S, Musić, S, Czakó-Nagy, I, Vértes, A, Maiorov, M & Petrov, A 1997, 'Formation and properties of oxide phases in the system Er2O3-Fe2O3', Journal of Alloys and Compounds, vol. 256, no. 1-2, pp. 27-33.
Ristić M, Popović S, Musić S, Czakó-Nagy I, Vértes A, Maiorov M et al. Formation and properties of oxide phases in the system Er2O3-Fe2O3. Journal of Alloys and Compounds. 1997 Jul 5;256(1-2):27-33.
Ristić, M. ; Popović, S. ; Musić, S. ; Czakó-Nagy, I. ; Vértes, A. ; Maiorov, M. ; Petrov, A. / Formation and properties of oxide phases in the system Er2O3-Fe2O3. In: Journal of Alloys and Compounds. 1997 ; Vol. 256, No. 1-2. pp. 27-33.
@article{54cd5752e3d94532a70649b4b9bc60f5,
title = "Formation and properties of oxide phases in the system Er2O3-Fe2O3",
abstract = "Mixed hydroxide, 3Er(OH)3 + 5Fe(OH)3, was prepared by chemical coprecipitation. X-Ray diffraction showed that the samples obtained by heating the mixed hydroxide at 650° C were amorphous, and contained Er2O3, α-Fe2O3, ErFeO3 and Er3Fe5O12 (ErIG) at 750°C. The changes in phase composition of the samples were also monitored by FT-IR spectroscopy. The M{\"o}ssbauer spectrum of mixed hydroxide, 3Er(OH)3 + 5Fe(OH)3, at RT was characterized with a quadrupole doublet (δFe = 0.38, Δ = 0.80, and Γ = 0.50 mm s-1). After heating the starting material up to 650°C, the superposition of two quadrupole doublets and of a sextet of very small intensity with H=506 kOe was observed. This result indicated that the amorphous fraction, as detected by XRD, actually contained additional Fe-bearing oxide phase of very fine particles and probably of poor crystallinity. The sample obtained at 1300°C was charcaterized by two hyperfine magnetic fields at RT with Hd = 394 and Ha = 489 kOe corresponding to ErIG. The results of magnetometric measurements of selected samples were discussed.",
keywords = "Hydroxides, Oxide phases",
author = "M. Ristić and S. Popović and S. Musić and I. Czak{\'o}-Nagy and A. V{\'e}rtes and M. Maiorov and A. Petrov",
year = "1997",
month = "7",
day = "5",
language = "English",
volume = "256",
pages = "27--33",
journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier BV",
number = "1-2",

}

TY - JOUR

T1 - Formation and properties of oxide phases in the system Er2O3-Fe2O3

AU - Ristić, M.

AU - Popović, S.

AU - Musić, S.

AU - Czakó-Nagy, I.

AU - Vértes, A.

AU - Maiorov, M.

AU - Petrov, A.

PY - 1997/7/5

Y1 - 1997/7/5

N2 - Mixed hydroxide, 3Er(OH)3 + 5Fe(OH)3, was prepared by chemical coprecipitation. X-Ray diffraction showed that the samples obtained by heating the mixed hydroxide at 650° C were amorphous, and contained Er2O3, α-Fe2O3, ErFeO3 and Er3Fe5O12 (ErIG) at 750°C. The changes in phase composition of the samples were also monitored by FT-IR spectroscopy. The Mössbauer spectrum of mixed hydroxide, 3Er(OH)3 + 5Fe(OH)3, at RT was characterized with a quadrupole doublet (δFe = 0.38, Δ = 0.80, and Γ = 0.50 mm s-1). After heating the starting material up to 650°C, the superposition of two quadrupole doublets and of a sextet of very small intensity with H=506 kOe was observed. This result indicated that the amorphous fraction, as detected by XRD, actually contained additional Fe-bearing oxide phase of very fine particles and probably of poor crystallinity. The sample obtained at 1300°C was charcaterized by two hyperfine magnetic fields at RT with Hd = 394 and Ha = 489 kOe corresponding to ErIG. The results of magnetometric measurements of selected samples were discussed.

AB - Mixed hydroxide, 3Er(OH)3 + 5Fe(OH)3, was prepared by chemical coprecipitation. X-Ray diffraction showed that the samples obtained by heating the mixed hydroxide at 650° C were amorphous, and contained Er2O3, α-Fe2O3, ErFeO3 and Er3Fe5O12 (ErIG) at 750°C. The changes in phase composition of the samples were also monitored by FT-IR spectroscopy. The Mössbauer spectrum of mixed hydroxide, 3Er(OH)3 + 5Fe(OH)3, at RT was characterized with a quadrupole doublet (δFe = 0.38, Δ = 0.80, and Γ = 0.50 mm s-1). After heating the starting material up to 650°C, the superposition of two quadrupole doublets and of a sextet of very small intensity with H=506 kOe was observed. This result indicated that the amorphous fraction, as detected by XRD, actually contained additional Fe-bearing oxide phase of very fine particles and probably of poor crystallinity. The sample obtained at 1300°C was charcaterized by two hyperfine magnetic fields at RT with Hd = 394 and Ha = 489 kOe corresponding to ErIG. The results of magnetometric measurements of selected samples were discussed.

KW - Hydroxides

KW - Oxide phases

UR - http://www.scopus.com/inward/record.url?scp=0031554446&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031554446&partnerID=8YFLogxK

M3 - Article

VL - 256

SP - 27

EP - 33

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

IS - 1-2

ER -