2007
DOI: 10.1103/physrevb.76.134415
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Angular dependence of the spin-flop transition and a possible structure of the spin-flop phase ofGd5Ge4

Abstract: The angular dependence of the spin-flop transition in Gd 5 Ge 4 has been examined by magnetization measurements of a single crystal. When the magnetic field vector is tilted away from the antiferromagnetic easy axis ͑c axis͒ toward the b axis, the spin-flop transition always remains first order in nature. However, when the field vector is tilted away from the c axis toward the a axis, the first order spin-flop transition is only observed over a narrow range of tilt angles ͑0 Ͻ Ͻ 20°͒, which serves as evidence … Show more

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Cited by 15 publications
(11 citation statements)
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“…S15c ), the net magnetisation along z dramatically increases under a small magnetic field of no more than 0.8 T because of the emergence of the noncollinear order and the increasing rate is also reduced at higher magnetic fields. The m - H curve suggests the AFM order sustains up to at least 300 K, consistent with that of the SHG measurement and the calculated upper limit of 540 K. All these observations strongly support the existence of the AFM order that were theoretically predicted and experimentally observed in SPSTM, as well as a spin-flop transition 35 , 36 .…”
Section: Resultssupporting
confidence: 89%
“…S15c ), the net magnetisation along z dramatically increases under a small magnetic field of no more than 0.8 T because of the emergence of the noncollinear order and the increasing rate is also reduced at higher magnetic fields. The m - H curve suggests the AFM order sustains up to at least 300 K, consistent with that of the SHG measurement and the calculated upper limit of 540 K. All these observations strongly support the existence of the AFM order that were theoretically predicted and experimentally observed in SPSTM, as well as a spin-flop transition 35 , 36 .…”
Section: Resultssupporting
confidence: 89%
“…the critical field begins to decrease as the field is aligned closer with the ab plane. This stands in contrast to other studies on spin flop compounds such as CaCo 2 As 2 [37] and Gd 5 Ge 4 [38], which show a non-linear increase in H SF with respect to θ.…”
Section: B Torque Magnetometry and The Spin Flop Transitioncontrasting
confidence: 99%
“…1c). A further increase in H c leads to an abrupt jump with a weak hysteretic behavior at H flop = 2.8 T, which indicates a first-order spin-flop transition [30][31][32][33] . The characteristic of this transition can be identified by extrapolation of the linear slope above H flop that crosses at the origin.…”
Section: Measured and Calculated Anisotropic Magnetizationmentioning
confidence: 97%