Preparation and structure of a new ternary transition metal Zintl compound containing high spin manganese-bismuth MnIIIBi4 tetrahedra

Kauzlarich, Susan M.; Kuromoto, Traci Y.; Olmstead, Marilyn M.

doi:10.1021/ja00202a069

Cited by 39 publications

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“…As shown in Fig. 4(a), after fitting with the nuclear structure based on the X-ray results, extra intensities were found to be superposed on the (2,0,0), (1,1,2), (2,0,0), (0,0,4), (1,3,2), and (2,0,4) reflections. To investigate the nature of these intensities, we performed higher statistical neutron powder diffraction experiments on the same powder sample below and above the magnetic transition temperature on the BT-2 spectrometer.…”

Section: Magnetic Susceptibility and Transport Measurementsmentioning

confidence: 98%

Neutron Diffraction Study of the Ternary Transition Metal Zintl Compound Ca14MnSb11

Kim

2002

Journal of Solid State Chemistry

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Section: Magnetic Susceptibility and Transport Measurementsmentioning

confidence: 98%

Neutron Diffraction Study of the Ternary Transition Metal Zintl Compound Ca14MnSb11

Kim

2002

Journal of Solid State Chemistry

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“…8 Since that time, a large number of new compounds have been prepared. 9 " 13 This structure type fits into the large class of compounds referred to as Zintl compounds.…”

Section: Transition Metal Zintl Phasesmentioning

confidence: 99%

Exploitation of Zintl Phases in the Pursuit of Novel Magnetic and Electronic Materials

Kauzlarich

Chan

Taylor

1999

ACS Symposium Series

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A brief historical overview on Zintl phases is provided and an introduction to the Zintl concept is given. This group's strategies for the synthesis of new solid phases and new forms of materials prepared by means of solution methods are discussed. An approach to synthesis of transition metal Zintl phases is outlined and our discovery of colossal magnetoresistance (CMR) in Eu 14 MnSb 11 is presented. Also, the use of Zintl phases to produce nanocrystals of Si and Ge is presented. FTIR spectroscopy of Ge nanocrystals provides evidence that these nanocrystals can be terminated with alkyl groups.Eduard Zintl lived from 1898-1941, a relatively short time, considering his impact on solid state and inorganic chemistry. 1 He was a German scientist who started his career at Freiburg University and went on to the Institute for Inorganic Chemisty at the Technische Hoschschule Darmstadt. One of his interests was in the synthesis and characterization of binary intermetallic compounds composed of alkali metals and main group elements. He was able to characterize these solid phases by x-ray powder diffraction and developed methods for handling air-sensitive compounds. By determining the crystal structure of these phases, he could distinguish the phases as either salt-like or metallic type structures. Since many of these phases were considered to be intermetallics, the idea that one could understand the structures as being composed of cations and anions or polyanions which obey valence rules was a significant contribution to our understanding of the bonding. In addition, he was also interested in the ammonia solution chemistry of these alkali metal main group phases and speculated, based on potentiometric titration experiments, on the existence of polyanions such as As 3 3 ", As 5 3 ", As 7 3 ", Sn 9 4 ", and Pb 7 4 ". These polyanions have since been isolated and their structures confirmed by single crystal x-ray diffraction. 2 After Zintl's death, F. Laves proposed calling those intermetallic compounds which had been described by Zintl and are understood by valence rules Zintl Phases. Unlike the intermetallic phases, these phases crystallize in isotypic salt-like structure types and are considered to be semiconductors. This classification has since been enlarged to include more complex phases than simple binaries. Generally, one

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“…The family of transition metal compounds with the Ca 14 AlSb 11 structure type 1 has shown a wide variety of unique electronic and magnetic properties. 2,3 In particular, the series A 14 MnPn 11 , show properties ranging from paramagnetic insulators to ferromagnetic metals, depending on the identity of A (alkaline earth or rare earth atom) and Pn (pnictogen atom). This class of compounds consists of an isolated magnetic cluster that can magnetically couple over large interionic distances (~1 nm).…”

Section: Introductionmentioning

confidence: 99%

“…The magnetic exchange interaction has been attributed to a Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction between localized moments via conduction electrons. 3 This structure type (A 14 MPn 11 ) has been prepared to date with most 2+ cations such as A = Ca, Sr, Ba, Eu, and Yb, with M = Mn, Al, Ga, In, Nb, and Zn, and with Pn = P, As, Sb, and Bi. One formula unit is composed of 14 A 2+ cations, one MPn 4 9tetrahedron, one Pn 3 7unit, and 4 Pn 3isolated anions.…”

Section: Introductionmentioning

confidence: 99%

“…Both structure and magnetism measurements have been used to support this assignment. 3 A recent report of X-ray magnetic circular dichroism (XMCD) measurements of the compound Yb 14 MnSb 11 has produced new information on the source of the magnetic moment in this system, and has increased our understanding of the magnetic interactions in this structure type. 27 The element specific measurements reveal a large dichroism in the L 23 absorption edge of Mn that is most consistent with Mn in a 2+ (d 5 ) configuration.…”

Section: Introductionmentioning

confidence: 99%

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XPS Studies of Yb14MnSb11 and Yb14ZnSb11

Holm¹,

Ozawa²,

Kauzlarich³

et al. 2003

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Preparation and structure of a new ternary transition metal Zintl compound containing high spin manganese-bismuth MnIIIBi4 tetrahedra

Cited by 39 publications

References 0 publications

Neutron Diffraction Study of the Ternary Transition Metal Zintl Compound Ca14MnSb11

Neutron Diffraction Study of the Ternary Transition Metal Zintl Compound Ca14MnSb11

Exploitation of Zintl Phases in the Pursuit of Novel Magnetic and Electronic Materials

XPS Studies of Yb14MnSb11 and Yb14ZnSb11

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