Field-Induced Partially Disordered State in Yb2Pt2Pb

The physical properties of Yb 2 Pt 2 Pb, which has been considered to be a geometrically frustrated antiferromagnet with the Shastry--Sutherland lattice, are investigated by magnetization and specific heat measurements under magnetic fields. Unconventional $H$--$T$ phase diagrams, which markedly var...

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Veröffentlicht in:	Journal of the Physical Society of Japan 2011-12, Vol.80 (12), p.123705-123705-4
Hauptverfasser:	Ochiai, Akira, Matsuda, Saori, Ikeda, Yusuke, Shimizu, Yasunobu, Toyoshima, Shigenori, Aoki, Haruyoshi, Katoh, Kenichi
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.) Magnetic properties and materials Magnetically ordered materials: other intrinsic properties Physics Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.)
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Zusammenfassung:	The physical properties of Yb 2 Pt 2 Pb, which has been considered to be a geometrically frustrated antiferromagnet with the Shastry--Sutherland lattice, are investigated by magnetization and specific heat measurements under magnetic fields. Unconventional $H$--$T$ phase diagrams, which markedly vary according to the direction of the applied magnetic field, are presented. When the magnetic field is applied along the [110] direction, a partially disordered state appears. Such unconventional $H$--$T$ phases of Yb 2 Pt 2 Pb are deduced to be ascribed to the Ising-like nature of the ground-state Kramers doublet and the characteristic crystal structure.
ISSN:	0031-9015 1347-4073
DOI:	10.1143/JPSJ.80.123705