Magnetic properties of the compounds ThCO2Ge2 and ThCo2Si2

Moshe Kuznietz; Tomoo Yamamura; Dexin Li; Yoshinobu Shiokawa

doi:10.1016/j.jmmm.2008.05.024

Magnetic properties of the compounds ThCO₂Ge₂ and ThCo₂Si₂

Moshe Kuznietz, Tomoo Yamamura, Dexin Li, Yoshinobu Shiokawa

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

1 Citation (Scopus)

Abstract

Rather old preparation of the compounds ThCo₂Ge₂ and ThCo₂Si₂ and their magnetic study in the temperature range 100-570 K, published by Omejec and Ban [Z. Anorg. Allg. Chem. 380 (1971) 111], indicated that both compounds ordered ferrromagnetically below 100 K. In order to verify the old data, polycrystalline samples of ThCo₂Ge₂ and ThCo₂Si₂ have been prepared by arc melting and subsequent annealing, and studied by X-ray diffraction at room temperature (RT), by superconducting quantum interference device (SQUID)-magnetization and AC-susceptibility measurements at 2-320 K, and by dc-magnetization measurements in variable magnetic fields up to 120 kOe at 5, 80, and 283 K. The magnetic measurements confirm the ferromagnetic ordering in both compounds, but with totally different Curie temperatures: ≈120(20) K for ThCo₂Ge₂ and above 320 K for ThCo₂Si₂. The paramagnetic values of ThCo₂Ge₂ and the ordering of both compounds are discussed and compared with the old results of Omejec and Ban.

Original language	English
Pages (from-to)	2402-2405
Number of pages	4
Journal	Journal of Magnetism and Magnetic Materials
Volume	320
Issue number	19
DOIs	https://doi.org/10.1016/j.jmmm.2008.05.024
Publication status	Published - 2008 Oct

Keywords

Magnetization
Susceptibility
ThCoX

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2008.05.024

Cite this

@article{c365380c5b384691a305340d79756833,

title = "Magnetic properties of the compounds ThCO2Ge2 and ThCo2Si2",

abstract = "Rather old preparation of the compounds ThCo2Ge2 and ThCo2Si2 and their magnetic study in the temperature range 100-570 K, published by Omejec and Ban [Z. Anorg. Allg. Chem. 380 (1971) 111], indicated that both compounds ordered ferrromagnetically below 100 K. In order to verify the old data, polycrystalline samples of ThCo2Ge2 and ThCo2Si2 have been prepared by arc melting and subsequent annealing, and studied by X-ray diffraction at room temperature (RT), by superconducting quantum interference device (SQUID)-magnetization and AC-susceptibility measurements at 2-320 K, and by dc-magnetization measurements in variable magnetic fields up to 120 kOe at 5, 80, and 283 K. The magnetic measurements confirm the ferromagnetic ordering in both compounds, but with totally different Curie temperatures: ≈120(20) K for ThCo2Ge2 and above 320 K for ThCo2Si2. The paramagnetic values of ThCo2Ge2 and the ordering of both compounds are discussed and compared with the old results of Omejec and Ban.",

keywords = "Magnetization, Susceptibility, ThCoX",

author = "Moshe Kuznietz and Tomoo Yamamura and Dexin Li and Yoshinobu Shiokawa",

note = "Funding Information: We thank Moshe Dubman of the Nuclear Research Center—Negev (NRCN) for performing the FULLPROF Rietveld refinements of the XRD data. M.K. thanks the International Frontier Center for Advanced Materials (IFCAM) of the Institute for Materials Research (IMR), Tohoku University, for financially supporting his stay at IMR. We would like to thank Prof. I. Satoh and Mr. M. Takahashi of Experimental Facility for Alpha-Emitters of IMR, Tohoku University, for their kind cooperation. This work was performed also at the Irradiation Experimental Facility, IMR, Tohoku University.",

year = "2008",

month = oct,

doi = "10.1016/j.jmmm.2008.05.024",

language = "English",

volume = "320",

pages = "2402--2405",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

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TY - JOUR

T1 - Magnetic properties of the compounds ThCO2Ge2 and ThCo2Si2

AU - Kuznietz, Moshe

AU - Yamamura, Tomoo

AU - Li, Dexin

AU - Shiokawa, Yoshinobu

N1 - Funding Information: We thank Moshe Dubman of the Nuclear Research Center—Negev (NRCN) for performing the FULLPROF Rietveld refinements of the XRD data. M.K. thanks the International Frontier Center for Advanced Materials (IFCAM) of the Institute for Materials Research (IMR), Tohoku University, for financially supporting his stay at IMR. We would like to thank Prof. I. Satoh and Mr. M. Takahashi of Experimental Facility for Alpha-Emitters of IMR, Tohoku University, for their kind cooperation. This work was performed also at the Irradiation Experimental Facility, IMR, Tohoku University.

PY - 2008/10

Y1 - 2008/10

N2 - Rather old preparation of the compounds ThCo2Ge2 and ThCo2Si2 and their magnetic study in the temperature range 100-570 K, published by Omejec and Ban [Z. Anorg. Allg. Chem. 380 (1971) 111], indicated that both compounds ordered ferrromagnetically below 100 K. In order to verify the old data, polycrystalline samples of ThCo2Ge2 and ThCo2Si2 have been prepared by arc melting and subsequent annealing, and studied by X-ray diffraction at room temperature (RT), by superconducting quantum interference device (SQUID)-magnetization and AC-susceptibility measurements at 2-320 K, and by dc-magnetization measurements in variable magnetic fields up to 120 kOe at 5, 80, and 283 K. The magnetic measurements confirm the ferromagnetic ordering in both compounds, but with totally different Curie temperatures: ≈120(20) K for ThCo2Ge2 and above 320 K for ThCo2Si2. The paramagnetic values of ThCo2Ge2 and the ordering of both compounds are discussed and compared with the old results of Omejec and Ban.

AB - Rather old preparation of the compounds ThCo2Ge2 and ThCo2Si2 and their magnetic study in the temperature range 100-570 K, published by Omejec and Ban [Z. Anorg. Allg. Chem. 380 (1971) 111], indicated that both compounds ordered ferrromagnetically below 100 K. In order to verify the old data, polycrystalline samples of ThCo2Ge2 and ThCo2Si2 have been prepared by arc melting and subsequent annealing, and studied by X-ray diffraction at room temperature (RT), by superconducting quantum interference device (SQUID)-magnetization and AC-susceptibility measurements at 2-320 K, and by dc-magnetization measurements in variable magnetic fields up to 120 kOe at 5, 80, and 283 K. The magnetic measurements confirm the ferromagnetic ordering in both compounds, but with totally different Curie temperatures: ≈120(20) K for ThCo2Ge2 and above 320 K for ThCo2Si2. The paramagnetic values of ThCo2Ge2 and the ordering of both compounds are discussed and compared with the old results of Omejec and Ban.

KW - Magnetization

KW - Susceptibility

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