Magnetic Studies of Ternary Germanides U3Co4Ge7 and U3Co2Ge7 with Strong Uniaxial Anisotropy
Result description
U3Co4Ge7 and U3Co2Ge7 have been prepared as single crystals by the solution growth method from tin flux and studied by X-ray diffraction, magnetic, transport, and specific-heat measurements; ab initio electronic-structure calculations have also been performed to study magnetism theoretically. U3Co4Ge7 has a tetragonal structure (I4/mmm), while U(3)Co(2)G(e)7 crystallizes in en orthorhombic structure (Cmmm), which appears to be a distortion of a tetragonal structure. All measurements document ferromagnetism in U3Co4Ge7 below T-C = 21 K with a strong magnetocrystalline anisotropy. The c-axis has a strong ferromagnetic contribution to magnetization and was found to be the easy-magnetization direction. U3Co2Ge7 orders magnetically below 40 K; the magneticstructure is sensitive to the ratio a/c approximate to 1, e. g., the deviation from the tetragonal axis.
Keywords
AnisotropyUniaxialStrongU3Co2Ge7U3Co4Ge7GermanidesTernaryStudiesMagnetic
The result's identifiers
Result code in IS VaVaI
Result on the web
DOI - Digital Object Identifier
Alternative languages
Result language
angličtina
Original language name
Magnetic Studies of Ternary Germanides U3Co4Ge7 and U3Co2Ge7 with Strong Uniaxial Anisotropy
Original language description
U3Co4Ge7 and U3Co2Ge7 have been prepared as single crystals by the solution growth method from tin flux and studied by X-ray diffraction, magnetic, transport, and specific-heat measurements; ab initio electronic-structure calculations have also been performed to study magnetism theoretically. U3Co4Ge7 has a tetragonal structure (I4/mmm), while U(3)Co(2)G(e)7 crystallizes in en orthorhombic structure (Cmmm), which appears to be a distortion of a tetragonal structure. All measurements document ferromagnetism in U3Co4Ge7 below T-C = 21 K with a strong magnetocrystalline anisotropy. The c-axis has a strong ferromagnetic contribution to magnetization and was found to be the easy-magnetization direction. U3Co2Ge7 orders magnetically below 40 K; the magneticstructure is sensitive to the ratio a/c approximate to 1, e. g., the deviation from the tetragonal axis.
Czech name
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Czech description
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Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of the Physical Society of Japan
ISSN
0031-9015
e-ISSN
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Volume of the periodical
81
Issue of the periodical within the volume
9
Country of publishing house
JP - JAPAN
Number of pages
10
Pages from-to
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UT code for WoS article
000308305000028
EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
BM - Solid-state physics and magnetism
Year of implementation
2012