Determination of hyperfine fields and atomic ordering in NiMnFeGe exhibiting martensitic transformation

• Autorzy: Satuła D. , Szymański D. , Rećko K. , Olszewski W. , Kalska-Szostko B.

Identyfikatory

DOI

10.1515/nuka-2015-0026

• Konferencja: All-Polish Seminar on Mössbauer Spectroscopy OSSM 2014 (10th ; 15-18.06.2014 ; Wrocław, Poland)
• Języki publikacji: EN

Abstrakty

EN

The hyperfi ne fi elds and atomic ordering in Ni1−xFexMnGe (x = 0.1, 0.2, 0.3) alloys were investigated using X-ray diffraction and Mössbauer spectroscopy at room temperature. The X-ray diffraction measurements show that the samples with x = 0.2, 0.3 crystallized in the hexagonal Ni2In-type of structure, whereas in the sample with x = 0.1, the coexistence of two phases, Ni2In- and orthorhombic TiNiSi-type of structures, were found. The Mössbauer spectra measured with x = 0.2, 0.3 show three doublets with different values of isomer shift (IS) and quadrupole splitting (QS) related to three different local surroundings of Fe atoms in the hexagonal Ni2In-type structure. It was shown that Fe atoms in the hexagonal Ni2In-type structure of as-cast Ni1−xFexMnGe alloys are preferentially located in Ni sites and small amount of Fe is located in Mn and probably in Ge sites. The spectrum for x = 0.1 shows the doublets in the central part of spectrum and a broad sextet. The doublets originate from the Fe atoms in the paramagnetic state of hexagonal Ni2In-type structure, whereas the sextet results from the Fe atoms in orthorhombic TiNiSi-type structure.

Słowa kluczowe

EN

X-ray diffraction; Mössbauer spectroscopy; martensitic transition; atomic ordering

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2015
• Tom: Vol. 60, No. 1
• Strony: 127--131
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Satuła D.

• Faculty of Physics, University of Bialystok, 1L K. Ciołkowskiego Str., 15-245 Białystok, Poland, Tel.: [phone], Fax: [phone]

autor

Szymański D.

• Faculty of Physics, University of Bialystok, 1L K. Ciołkowskiego Str., 15-245 Białystok, Poland, Tel.: [phone], Fax: [phone]

autor

Rećko K.

• Faculty of Physics, University of Bialystok, 1L K. Ciołkowskiego Str., 15-245 Białystok, Poland, Tel.: [phone], Fax: [phone]

autor

Olszewski W.

• Faculty of Physics, University of Bialystok, 1L K. Ciołkowskiego Str., 15-245 Białystok, Poland
• ALBA Synchrotron Light Source, Crta. BP 1413, Km. 3.3, 08290 Cerdanyola del Vallès, Barcelona, Spain

autor

Kalska-Szostko B.

• Institute of Chemistry, University of Bialystok, 1 Hurtowa Str., 15-399 Białystok, Poland

Bibliografia

• 1. Koyama, K., Sakai, M., Kanomata, T., & Watanabe, K. (2004). Field-induced martensitic transformation in new ferromagnetic shape memory compound Mn1.07Co0.92Ge. Jpn. J. Appl. Phys., 43, 8036−8039.DOI:10.1143/JJAP.43.8036.
• 2. Liu, E., Wang, W., Feng, L., Zhu, W., Li, G., Chen, J., Zhang, H., Wu, G., Jiang, C., Xu, H., & de Boer, F. (2012). Stable magnetostructural coupling with tunable magnetoresponsive effects in hexagonal ferromagnets. Nat. Commun., 3, 873-p10. DOI: 10.1038/ncomms1868.
• 3. Liu, E. K., Zhu, W., Feng, L., Chen, J. L., Wang, W. H., & Wu, G. H. (2010). Vacancy-tuned paramagnetic/ferromagnetic martensitic transformation in Mn-poor Mn1-xCoGe alloys. EPL, 91, 17003-p5. DOI:10.1209/0295-5075/91/17003.
• 4. Trung, N. T., Zhang, L., Caron, L., Buschow, K. H. J., & Brück, E. (2010). Giant magnetocaloric effects by tailoring the phase transitions. Appl. Phys. Lett., 96, 172503−172504. DOI:10.1063/1.3399773.
• 5. Zhang, C. L., Wang, H. D., Cao, Q. Q., Han, Z. D., Xuan, H. C., & Du, Y. W. (2008). Magnetostructural phase transition and magnetocaloric effect in off-stoichiometric Mn1.9-xNixGe alloys. Appl. Phys. Lett., 93, 122505-3p. DOI:10.1063/1.2990649.
• 6. Bażela, W., Szytuła, A., Todorović, J., Tomkowicz, Z., & Zięba, A. (1976). Crystal and magnetic structure of NiMnGe. Phys. Status Solidi A-Appl. Mat., 38, 721−729. DOI: 10.1002/pssa.2210380235.
• 7. Fjellvåg, H., & Andresen, A. F. (1985). On the crystal structure and magnetic properties of MnNiGe. J. Magn. Magn. Mater., 50, 291−297. DOI: 10.1016/0304-8853(85)90065-4.
• 8. Satuła, D., Dobrzyński, L., Waliszewski, J., Szymański, K., Rećko, K., Malinowski, A., Brückel, Th., Schärpf, O., & Blinowski, K. (1997). Structural and magnetic properties of Fe-Cr-Al alloys with DO3-type of structure. J. Magn. Magn. Mater., 169, 240−252. DOI:10.1016/S0304-8853(96)00758-5.
• 9. Satuła, D., Szymański, K., Dobrzyński, L., Waliszewski, J., & Malinowski, A. (1995). Local environments effects and site preference in Fe3-xCrxAl alloys. J. Magn. Magn. Mater., 140/144, 61−62. DOI: 10.1016/0304-8853(94)01049-8.
• 10. Szymański, K., Biernacka, M., Dobrzyński, L., Perzyńska, K., Rećko, K., Satuła, D., Waliszewski, J., & Zaleski, P. (2000). Mössbauer and magnetic studies of Fe3-xCoxAl. J. Magn. Magn. Mater., 210, 150−162. DOI: 10.1016/S0304-8853(99)00644-7.
• 11. Akai, H., Blügel, S., Zeller, R., & Dederichs, P. H. (1986). Isomer shifts and relation to charge transfer in dilute Fe alloys. Phys. Rev. Lett., 56, 2407−2410. DOI: 10.1016/0304-8853(86)90401-4