Optical and magnetic properties of EuSi202N2

Y.Q. Li; K.V. Ramanujachary; S.E. Lofland; G. With, de; H.T.J.M. Hintzen

doi:10.1557/JMR.2006.0057

Optical and magnetic properties of EuSi202N2

Y.Q. Li, K.V. Ramanujachary, S.E. Lofland, G. With, de, H.T.J.M. Hintzen

Materials and Interface Chemistry

Research output: Contribution to journal › Article › Academic › peer-review

14 Citations (Scopus)

Abstract

A new europium-silicon-oxynitride compound EuSi2O2N2 was obtained by a reaction of Eu2O3, SiO2, and α-Si3N4 at 1300 ¿C under a nitrogen atmosphere. EuSi2O2N2 is indexed on a monoclinic unit cell with a = 13.151(5) ¿, b =17.311(5) ¿, c = 7.956(2) ¿, β = 104.12(4)¿, and V = 1756.56 ¿3. EuSi2O2N2 shows a highly pure yellow color associated with a very steep drop in the reflection spectrum with an optical absorption edge at about 512 nm (2.43 eV). On the other hand, EuSi2O2N2 can be efficiently excited in the visible range 370-485 nm and shows a broad band emission peaking at about 568 nm corresponding to the Eu2+ 4f65d1 right facing arrow 4f7 transition. EuSi2O2N2 shows paramagnetic Curie behavior with an experimental magnetic moment of 7.89(3) μB in accordance with 7 unpaired spins of Eu2+. Additionally, no magnetic ordering can be observed down to 5 K. The divalent nature of the Eu ions in EuSi2O2N2 is evident from both luminescence and magnetic properties

Original language	English
Pages (from-to)	396-401
Number of pages	6
Journal	Journal of Materials Research
Volume	21
Issue number	2
DOIs	https://doi.org/10.1557/JMR.2006.0057
Publication status	Published - 2006

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title = "Optical and magnetic properties of EuSi202N2",

abstract = "A new europium-silicon-oxynitride compound EuSi2O2N2 was obtained by a reaction of Eu2O3, SiO2, and α-Si3N4 at 1300 ¿C under a nitrogen atmosphere. EuSi2O2N2 is indexed on a monoclinic unit cell with a = 13.151(5) ¿, b =17.311(5) ¿, c = 7.956(2) ¿, β = 104.12(4)¿, and V = 1756.56 ¿3. EuSi2O2N2 shows a highly pure yellow color associated with a very steep drop in the reflection spectrum with an optical absorption edge at about 512 nm (2.43 eV). On the other hand, EuSi2O2N2 can be efficiently excited in the visible range 370-485 nm and shows a broad band emission peaking at about 568 nm corresponding to the Eu2+ 4f65d1 right facing arrow 4f7 transition. EuSi2O2N2 shows paramagnetic Curie behavior with an experimental magnetic moment of 7.89(3) μB in accordance with 7 unpaired spins of Eu2+. Additionally, no magnetic ordering can be observed down to 5 K. The divalent nature of the Eu ions in EuSi2O2N2 is evident from both luminescence and magnetic properties",

author = "Y.Q. Li and K.V. Ramanujachary and S.E. Lofland and {With, de}, G. and H.T.J.M. Hintzen",

year = "2006",

doi = "10.1557/JMR.2006.0057",

language = "English",

volume = "21",

pages = "396--401",

journal = "Journal of Materials Research",

issn = "0884-2914",

publisher = "Materials Research Society",

number = "2",

}

TY - JOUR

T1 - Optical and magnetic properties of EuSi202N2

AU - Li, Y.Q.

AU - Ramanujachary, K.V.

AU - Lofland, S.E.

AU - With, de, G.

AU - Hintzen, H.T.J.M.

PY - 2006

Y1 - 2006

N2 - A new europium-silicon-oxynitride compound EuSi2O2N2 was obtained by a reaction of Eu2O3, SiO2, and α-Si3N4 at 1300 ¿C under a nitrogen atmosphere. EuSi2O2N2 is indexed on a monoclinic unit cell with a = 13.151(5) ¿, b =17.311(5) ¿, c = 7.956(2) ¿, β = 104.12(4)¿, and V = 1756.56 ¿3. EuSi2O2N2 shows a highly pure yellow color associated with a very steep drop in the reflection spectrum with an optical absorption edge at about 512 nm (2.43 eV). On the other hand, EuSi2O2N2 can be efficiently excited in the visible range 370-485 nm and shows a broad band emission peaking at about 568 nm corresponding to the Eu2+ 4f65d1 right facing arrow 4f7 transition. EuSi2O2N2 shows paramagnetic Curie behavior with an experimental magnetic moment of 7.89(3) μB in accordance with 7 unpaired spins of Eu2+. Additionally, no magnetic ordering can be observed down to 5 K. The divalent nature of the Eu ions in EuSi2O2N2 is evident from both luminescence and magnetic properties

AB - A new europium-silicon-oxynitride compound EuSi2O2N2 was obtained by a reaction of Eu2O3, SiO2, and α-Si3N4 at 1300 ¿C under a nitrogen atmosphere. EuSi2O2N2 is indexed on a monoclinic unit cell with a = 13.151(5) ¿, b =17.311(5) ¿, c = 7.956(2) ¿, β = 104.12(4)¿, and V = 1756.56 ¿3. EuSi2O2N2 shows a highly pure yellow color associated with a very steep drop in the reflection spectrum with an optical absorption edge at about 512 nm (2.43 eV). On the other hand, EuSi2O2N2 can be efficiently excited in the visible range 370-485 nm and shows a broad band emission peaking at about 568 nm corresponding to the Eu2+ 4f65d1 right facing arrow 4f7 transition. EuSi2O2N2 shows paramagnetic Curie behavior with an experimental magnetic moment of 7.89(3) μB in accordance with 7 unpaired spins of Eu2+. Additionally, no magnetic ordering can be observed down to 5 K. The divalent nature of the Eu ions in EuSi2O2N2 is evident from both luminescence and magnetic properties

U2 - 10.1557/JMR.2006.0057

DO - 10.1557/JMR.2006.0057

M3 - Article

SN - 0884-2914

VL - 21

SP - 396

EP - 401

JO - Journal of Materials Research

JF - Journal of Materials Research

IS - 2

ER -

Optical and magnetic properties of EuSi202N2

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