TY - JOUR
T1 - Interplay of Sm4f and Co3d spins in SmCoAsO
AU - Awana, V. P.S.
AU - Pal, Anand
AU - Gahtori, Bhasker
AU - Kishan, H.
N1 - Funding Information:
Authors would like to thank Prof. P. Chaddah Director, CSR-IUC Indore for various discussions related to this work. Authors also acknowledge the keen interest and support of their Director Prof. R.C. Budhani in this work. Bhasker Gahtori is supported financially from Department of Science and Technology (DST) by DST-Fast Track Young Scientist position at NPL.
PY - 2011/6
Y1 - 2011/6
N2 - We present detailed magnetization and magneto-transport studies on the title compound SmCoAsO. In a recent paper we reported (Awana et al., 2010 [1]) the complex magnetism of this compound. SmCoAsO undergoes successive paramagnetic (PM)ferro-magnetic (FM)anti-ferro-magnetic (AFM) transitions with decrease in temperature. This is mainly driven via the c-direction interaction of Sm4f (SmO layer) spins with adjacent (CoAs layer) ordered Co 3d spins. In this article we present an evidence of kinetic arrest for FMAFM transition. The isothermal magnetization (MH) loops for SmCoAsO exhibited the meta-magnetic transitions at 6, 8 and 10 K at around 80, 60 and 50 kOe fields, respectively, with characteristic hysteresis shoulders along with the non-zero moment at the origin, thus suggesting the possibility of kinetic arrest. Suggested kinetic arrest is further evident in zero field-cooled (ZFC) and field-cooled (FC) hysteresis under high fields of up to 140 kOe magnetization (MT) and the magneto-transport measurements R(T)H during FMAFM transition. The time dependent moment experiments exhibited very small (∼23%) increase of the same below 20 kOe and decrease for 30 kOe at 15 K.
AB - We present detailed magnetization and magneto-transport studies on the title compound SmCoAsO. In a recent paper we reported (Awana et al., 2010 [1]) the complex magnetism of this compound. SmCoAsO undergoes successive paramagnetic (PM)ferro-magnetic (FM)anti-ferro-magnetic (AFM) transitions with decrease in temperature. This is mainly driven via the c-direction interaction of Sm4f (SmO layer) spins with adjacent (CoAs layer) ordered Co 3d spins. In this article we present an evidence of kinetic arrest for FMAFM transition. The isothermal magnetization (MH) loops for SmCoAsO exhibited the meta-magnetic transitions at 6, 8 and 10 K at around 80, 60 and 50 kOe fields, respectively, with characteristic hysteresis shoulders along with the non-zero moment at the origin, thus suggesting the possibility of kinetic arrest. Suggested kinetic arrest is further evident in zero field-cooled (ZFC) and field-cooled (FC) hysteresis under high fields of up to 140 kOe magnetization (MT) and the magneto-transport measurements R(T)H during FMAFM transition. The time dependent moment experiments exhibited very small (∼23%) increase of the same below 20 kOe and decrease for 30 kOe at 15 K.
UR - https://www.scopus.com/pages/publications/79952194626
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U2 - 10.1016/j.jmmm.2010.12.045
DO - 10.1016/j.jmmm.2010.12.045
M3 - Article
AN - SCOPUS:79952194626
SN - 0304-8853
VL - 323
SP - 1460
EP - 1464
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - 11
ER -