TY - JOUR
T1 - Magnetic phase diagram and change in 5f electronic states in NpNiGa5
AU - Honda, F.
AU - Metoki, N.
AU - Kaneko, K.
AU - Jonen, S.
AU - Yamamoto, E.
AU - Aoki, D.
AU - Homma, Y.
AU - Shiokawa, Y.
AU - Onuki, Y.
N1 - Funding Information:
A part of this work was supported by JSPS, Grant-in-Aid for Young Scientists (B), no. 16740212 and by the REIMEI Research Resources of JAERI.
PY - 2006/5/1
Y1 - 2006/5/1
N2 - Our neutron scattering study revealed that NpNiGa5 has a canted structure with the antiferromagnetic (AFM) component along [1 1 0] with q = ( frac(1, 2) frac(1, 2) frac(1, 2) ) below 18 K, superposed on a ferromagnetic (FM) component along the c-axis. A simple FM order remains stable with elevating temperature ( 18 K < T < 30 K) or applying field ( μ0 H > 8 T) along [1 1 0]. The large difference in the magnetic moment for these two structures indicates that the transition at TN = 18 K is attributed to the 5f electronic transition between the low-moment FM state and high-moment state accompanying the in-plane AFM component perpendicular to the quantization c-axis. It can be qualitatively understood by a localized 5f model with competing interactions, while the 5f electrons are believed to be itinerant from the partial quenching of the orbital contribution in the magnetic form factor.
AB - Our neutron scattering study revealed that NpNiGa5 has a canted structure with the antiferromagnetic (AFM) component along [1 1 0] with q = ( frac(1, 2) frac(1, 2) frac(1, 2) ) below 18 K, superposed on a ferromagnetic (FM) component along the c-axis. A simple FM order remains stable with elevating temperature ( 18 K < T < 30 K) or applying field ( μ0 H > 8 T) along [1 1 0]. The large difference in the magnetic moment for these two structures indicates that the transition at TN = 18 K is attributed to the 5f electronic transition between the low-moment FM state and high-moment state accompanying the in-plane AFM component perpendicular to the quantization c-axis. It can be qualitatively understood by a localized 5f model with competing interactions, while the 5f electrons are believed to be itinerant from the partial quenching of the orbital contribution in the magnetic form factor.
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U2 - 10.1016/j.physb.2006.01.471
DO - 10.1016/j.physb.2006.01.471
M3 - Article
AN - SCOPUS:33646430836
SN - 0921-4526
VL - 378-380
SP - 1009
EP - 1010
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
IS - SPEC. ISS.
ER -