Magnetic structures and magnetic susceptibilities of terbium oxysulfide and oxyselenide

Abbas, Yehia; Rossat‐Mignod, J.; Quézel, G.

doi:10.1016/0038-1098(73)90021-5

Cited by 14 publications

(4 citation statements)

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“…3 oxygen atoms at 2.40 A and 1 S at 2.90 A. For the first shell the distances are in good agreement with those observed in the crystal structure of Tb202S (21) but the number of near neighbors is smaller. The numbers of near neighbors of terbium are approximately 3 and 1 for oxygen and sulfur, respectively (cf.…”

Section: When the Experimental Radial Distribution Function P(r)supporting

confidence: 87%

EXAFS Study of Terbium Activated Zinc Sulfide Thin Films

Charreire

Marbeuf

Tourillon

et al. 1992

J. Electrochem. Soc.

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In order to establish the nature of luminescent centers in green-emitting electroluminescent thin film structures based on terbium-activated zinc sulfide, extended x-ray absorption fine structure (EXAFS) measurements were carried out using x-ray radiation from the 1.85 GeV-200 mA DCI storage ring in Orsay. Analysis of the EXAFS spectra at the Tb L~n edge gives direct evidence for the presence of Tb-containing clusters in films prepared by the Atomic Layer Epitaxy process. The polycations TbO § forming the clusters are very similar to those found in the crystal structure of Tb202S. ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 132.174.255.116 Downloaded on 2015-06-02 to IP

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Section: When the Experimental Radial Distribution Function P(r)supporting

confidence: 87%

EXAFS Study of Terbium Activated Zinc Sulfide Thin Films

Charreire

Marbeuf

Tourillon

et al. 1992

J. Electrochem. Soc.

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“…Some of the first rare earth oxyselenides studied were (Tb,Dy,Ho) 2 O 2 (S,Se) and the local coordination geometry is shown in Fig. 6 for Tb 2 O 2 S (Abbas et al, 1973(Abbas et al, , 1974. The case of Tb 2 O 2 (S,Se) (Abbas et al, 1974;Rossat-Mignod et al, 1974) is particularly interesting as the magnetic structure involves a large canting of the Tb 3+ moment which is not expected given the symmetry of the lattice.…”

Section: Rare Earth Local Magnetismmentioning

confidence: 99%

“…The magnetic structural properties of Ln-O-Se phases where no d transition metal ion is present have not been as fully investigated as transition metal oxyselenide systems. Early work on Tb 2 O 2 (S,Se) and Dy 2 O 2 (S,Se) described above motivated crystal field work to understand the unusual canting measured in the Tb variant (Abbas et al, 1973(Abbas et al, , 1974Rossat-Mignod et al, 1974). For A 4 O 4 Se 3 compounds long-range antiferromagnetic order occurs for Ln = Gd, Tb and Dy phases but has not been observed down to 1.8 K for other analogues (Strobel et al, 2008;Tuxworth et al, 2015).…”

Section: Ln -O -Se Phasesmentioning

confidence: 99%

“…This is always the case for such ions and the degeneracy can only be broken with a field which breaks time reversal symmetry, such as a magnetic field but not an electric. Some of the first rare earth oxyselenides studied were (Tb,Dy,Ho) 2 O 2 (S,Se) and the local coordination geometry is shown in figure 6 for Tb 2 O 2 S (Abbas et al 1973(Abbas et al , 1974. The case of Tb 2 O 2 (S,Se) (Abbas et al 1974 is particularly interesting as the magnetic structure involves a large canting of the Tb 3+ moment which is not expected given the symmetry of the lattice.…”

Section: Local Magnetismmentioning

confidence: 99%

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The magnetic and electronic properties of oxyselenides—influence of transition metal ions and lanthanides

Stock¹,

McCabe²

2016

J. Phys.: Condens. Matter

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Magnetic oxyselenides have been a topic of research for several decades, firstly in the context of photoconductivity and thermoelectricity owing to their intrinsic semiconducting properties and ability to tune the energy gap through metal ion substitution. More recently, interest in the oxyselenides has experienced a resurgence owing to the possible relation to strongly correlated phenomena given the fact that many oxyselenides share a similar structure to unconventional superconducting pnictides and chalcogenides. The two dimensional nature of many oxyselenide systems also draws an analogy to cuprate physics where a strong interplay between unconventional electronic phases and localised magnetism has been studied for several decades. It is therefore timely to review the physics of the oxyselenides in the context of the broader field of strongly correlated magnetism and electronic phenomena. Here we review the current status and progress in this area of research with the focus on the influence of lanthanides and transition metal ions on the intertwined magnetic and electronic properties of oxyselenides. The emphasis of the review is on the magnetic properties and comparisons are made with iron based pnictide and chalcogenide systems.

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Crystal Field Determination in Rare‐Earth Oxysulfides. I. Optical Experiments for Tb³⁺ Ion

Rossat‐Mignod¹,

Souillat

Quézel

1974

Physica Status Solidi (b)

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The crystalline electric field (CEF) acting on a Tb3+ ion in rare-earth oxysulfides has been determined. By analysing fluorescence spectra of Y,O,S: 1% Tb3+, i t is possible t o obtain the energy levels of the 'FJ ( J = 1 t o 6) nianifolds of Tb3+ in this host and therefore the CEF Hamiltonian of Csv symmetry. I n order to explain the particular magnetization processes in Tb,O,S, particular attention has been paid to the ground state. It has been found that the ground state consists of four levels lying very close one another (0, 6, 15, 26 cm-l). Both the direction and the value of the magnetic moment calculated according to this level scheme agree well with neutron diffraction data.L'analyse des spectres de fluorescence de Tb,O,S dilu6 A ly0 dam une matrice de Y20,S a permis d'obtenir la d6composition des multiplets 'FJ ( J = 1 it 6) de Tb3+ par le champ cristallin de symktrie CsV, et ainsi de dkterminer l'hamiltonien de champ cristallin. Nous avons montri! que le niveau fondamental n'est pas constituh d'un doublet, mais d'un ensemble de quatre niveaux trks proches 1es uns des autres (0, 6, 15, 26 em-l). Ceci a permis d'expliquer les processus d'aimantation particuliers dans Tb,O,S; la valeur et la direction des moments magnhtiques dhterminkes par les calculs de champ cristallin sont en bon accord avec les rhsultats de diffraction nentronique.

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Magnetic structures and magnetic susceptibilities of terbium oxysulfide and oxyselenide

Cited by 14 publications

References 7 publications

EXAFS Study of Terbium Activated Zinc Sulfide Thin Films

EXAFS Study of Terbium Activated Zinc Sulfide Thin Films

The magnetic and electronic properties of oxyselenides—influence of transition metal ions and lanthanides

Crystal Field Determination in Rare‐Earth Oxysulfides. I. Optical Experiments for Tb³⁺ Ion

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Magnetic structures and magnetic susceptibilities of terbium oxysulfide and oxyselenide

Cited by 14 publications

References 7 publications

EXAFS Study of Terbium Activated Zinc Sulfide Thin Films

EXAFS Study of Terbium Activated Zinc Sulfide Thin Films

The magnetic and electronic properties of oxyselenides—influence of transition metal ions and lanthanides

Crystal Field Determination in Rare‐Earth Oxysulfides. I. Optical Experiments for Tb3+ Ion

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Crystal Field Determination in Rare‐Earth Oxysulfides. I. Optical Experiments for Tb³⁺ Ion