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Kußmann, Dirk; Hoffmann, Rolf‐Dieter; Pöttgen, Rainer

doi:10.1002/(sici)1521-3749(1998110)624:11<1727::aid-zaac1727>3.3.co;2-s

Cited by 74 publications

(89 citation statements)

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“…The ampoule was subsequently placed in a water-cooled sample chamber of a high-frequency furnace (Hüttinger Elektronik, Freiburg, Typ TIG 5/300). 12 The heat treatment was similar to our previous experiments:…”

Section: Experimental a Synthesismentioning

confidence: 60%

Magnetic ordering in the static intermediate-valent cerium compoundCe2RuZn4

et al. 2008

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The low-temperature behavior of Ce2RuZn4 has been investigated. Specific heat and magnetic susceptibility data reveal an antiferromagnetic transition at a Néel temperature of 2 K. Ce2RuZn4 is a static intermediate-valent compound with two crystallographically independent cerium atoms. The magnetic data clearly show that only one cerium site is magnetic (Ce 3+ ), while the second one carries no magnetic moment. The experimental data are interpreted with the help of first principles electronic structure calculations using density functional theory and the augmented spherical wave method. The calculations reveal the occurrence of two different cerium sites, which are characterized by strongly localized magnetic moments and strong Ce-Ru bonding, respectively.

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Section: Experimental a Synthesismentioning

confidence: 60%

Magnetic ordering in the static intermediate-valent cerium compoundCe2RuZn4

et al. 2008

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“…The elements were then weighed in the ideal 1:1:1 atomic ratio and arc-welded in small tantalum tubes. The tantalum ampoules were placed in a water-cooled sample chamber of an induction furnace (Hüttinger Elektronik, Freiburg, Typ TIG 1.5/300) [20], rapidly heated to 1370 K and kept at that temperature for 5 min. The temperature was controlled through a Sensor Therm Metis MS09 pyrometer with an accuracy of ±30 K. The sample was then quenched by switching off the power supply.…”

Section: Synthesismentioning

confidence: 99%

Structure and Properties of Dimorphic CePdZn

Hermes¹,

Mishra²,

Müller³

et al. 2009

Zeitschrift anorg allge chemie

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“…Subsequently, the cerium button and pieces of the zinc and tin granules were weighed in the ideal 1 : 1 : 1 atomic ratio and arc-welded in a small tantalum ampoule under an argon pressure of 700 mbar. The ampoule was then placed in a water-cooled sample chamber [22] of an induction furnace (Hüttinger Elektronik, Freiburg, Germany; type TIG 5/300) and three times heated for 5 min at 1360 K. After the third step the sample was kept at 1360 K for 10 min, rapidly cooled to 920 K, and subsequently annealed at that temperature for another 6 h. Finally the tube was quenched to r. t. by switching off the power of the generator. The brittle CeZnSn sample could readily be separated from the tantalum tube by mechanical fragmentation.…”

Section: Synthesismentioning

confidence: 99%

Ferromagnetic Ordering in CeZnSn

Hermes

Matar

Harmening

et al. 2009

Zeitschrift Für Naturforschung B

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The stannide CeZnSn was obtained in X-ray-pure form by induction-melting of the elements in a sealed tantalum ampoule. CeZnSn crystallizes with the YPtAs-type structure, space group P6 3 /mmc, a = 456.7(3), c = 1673.8(5) pm, wR2 = 0.0862, 259 F 2 values, and 12 variables. The zinc and tin atoms build up puckered Zn 3 Sn 3 hexagons (Zn-Sn 271 pm) with weak interlayer Zn-Zn interactions (323 pm). Susceptibility measurements of CeZnSn reveal modified Curie-Weiss behavior above 50 K with an experimental magnetic moment of 2.77(1) µ B / Ce atom. The cerium magnetic moments order ferromagnetically at T C = 5.2(1) K. 119 Sn Mössbauer spectra show a single tin site at an isomer shift of δ = 1.967(4) mm/s subjected to a small quadrupole splitting of ∆E Q = 0.41(2) mm/s at 40 K. At 4.2 K a magnetic hyperfine field of 0.872(5) T is transferred to the tin site. From DFT scalar relativistic calculations of the electronic and magnetic structures, chemical bonding analysis reveals on one hand a weaker bonding of Zn than of Sn with the cerium substructures with a twice stronger Ce1-Sn bond compared to Ce2-Sn. On the other hand, a ferromagnetic ground state is identified from total energy differences in agreement with experiment.

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Cited by 74 publications

References 0 publications

Magnetic ordering in the static intermediate-valent cerium compoundCe2RuZn4

Magnetic ordering in the static intermediate-valent cerium compoundCe2RuZn4

Structure and Properties of Dimorphic CePdZn

Ferromagnetic Ordering in CeZnSn

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