Tbx Er1-x Ni5 compounds: An ideal model system for competing Ising- XY anisotropy energies / Pirogov A.N., Park J.-G., Ermolenko A.S., Korolev A.V., Kuchin A.G., Lee S., Choi Y.N., Park J., Ranot M., Yi J., Gerasimov E.G., Dorofeev Y.A., Vokhmyanin A.P., Podlesnyak A.A., Swainson I.P. // Physical Review B - Condensed Matter and Materials Physics. - 2009. - V. 79, l. 17.

ISSN:

10980121

Type:

Article

Abstract:

We have studied Tbx Er1-x Ni5 (x=0, 0.1, 0.2, 0.3, 0.4, 0.6, 0.8, 0.925, and 1.0) compounds by using several experimental techniques such as ac-susceptibility, heat-capacity, and neutron-diffraction measurements. All the compounds are found to crystallize in the CaCu5 -type structure with space group P6/mmm. The a axis shows a linear increase with Tb concentration, whereas the c axis remains almost unchanged over the whole doping range. Our neutron-diffraction studies revealed that samples for 0≤x≤0.8 have a commensurate magnetic structure with k=0, whereas the two samples on the Tb-rich phase (x=0.925 and 1.0) have an incommensurate structure. Of particular interest is that individual Tb and Er moments keep their mutually orthogonal arrangement seen at the end-member compositions over the whole doping range, due to very strong magnetic anisotropy of single-ion nature. We have established a complete magnetic x-T phase diagram of Tbx Er1-x Ni5 to find that two straight lines of the ordering of the Tb and Er subsystems are persistently seen, which intersect at a tetracritical point. © 2009 The American Physical Society.

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DOI:

10.1103/PhysRevB.79.174412

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Art. No.	174412
Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-66849111743&doi=10.1103%2fPhysRevB.79.174412&partnerID=40&md5=6eeb2dc832b3000f48e5799104d43c9c
Affiliations	Department of Physics, SungKyunKwan University, Suwon 440-746, South Korea; Institute of Metal Physics, Russian Academy of Sciences, S. Kovalevskya 18, 620041 Ekaterinburg, Russian Federation; Department of Energy Science, SungKyunKwan University, Suwon 440-746, South Korea; Center for Strongly Correlated Materials Research, Seoul National University, Seoul 151-712, South Korea; Neutron Science Division, Korea Atomic Energy Research Institute, Daejeon 305-600, South Korea; Laboratory for Neutron Scattering, ETH Zurich, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland; Spallation Neutron Source, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States; NRC, Chalk River Laboratories, Chalk River, ON K0J 1J0, Canada
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Correspondence Address	Pirogov, A. N.; Department of Physics, SungKyunKwan University, Suwon 440-746, South Korea; email: pirogov05@gmail.com
CODEN	PRBMD
Language of Original Document	English
Abbreviated Source Title	Phys. Rev. B Condens. Matter Mater. Phys.
Source	Scopus