Crystal structure and negative magnetization in Sm2Al and Sm1.988Gd0.012Al compounds

Pramod Kumar; Rachana Kumar; S. Pandey; K. G. Suresh; A. K. Nigam

doi:10.1016/j.physb.2014.02.036

Crystal structure and negative magnetization in Sm₂Al and Sm_1.988Gd_0.012Al compounds

Pramod Kumar, Rachana Kumar, S. Pandey, K. G. Suresh, A. K. Nigam

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Here we report Sm₂Al and Sm_1.988Gd_0.012Al compounds, with orthorhombic crystal structure (space group: Pnma), showing negative magnetization in temperature dependence magnetization data. Both compounds magnetically order at ~150 and 200 K respectively and below this temperature, magnetization data shows a compensation temperature (T _comp) which shifts with field. Hysteresis loops obtained below T _comp signify that both Sm₂Al and Sm_1.988Gd _0.012Al possess exchange anisotropy. Both, exchange anisotropy field and coercive field are found to be quite large and comparable to those of the classical spin-orbit compensated ferromagnet (Sm,Gd)Al₂.

Original language	English
Pages (from-to)	6-8
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	448
DOIs	https://doi.org/10.1016/j.physb.2014.02.036
State	Published - 1 Sep 2014
Externally published	Yes

Keywords

Ferromagnetic
Negative magnetization
Spin-orbit coupling

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10.1016/j.physb.2014.02.036

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title = "Crystal structure and negative magnetization in Sm2Al and Sm1.988Gd0.012Al compounds",

abstract = "Here we report Sm2Al and Sm1.988Gd0.012Al compounds, with orthorhombic crystal structure (space group: Pnma), showing negative magnetization in temperature dependence magnetization data. Both compounds magnetically order at ~150 and 200 K respectively and below this temperature, magnetization data shows a compensation temperature (T comp) which shifts with field. Hysteresis loops obtained below T comp signify that both Sm2Al and Sm1.988Gd 0.012Al possess exchange anisotropy. Both, exchange anisotropy field and coercive field are found to be quite large and comparable to those of the classical spin-orbit compensated ferromagnet (Sm,Gd)Al2.",

keywords = "Ferromagnetic, Negative magnetization, Spin-orbit coupling",

author = "Pramod Kumar and Rachana Kumar and S. Pandey and Suresh, {K. G.} and Nigam, {A. K.}",

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T1 - Crystal structure and negative magnetization in Sm2Al and Sm1.988Gd0.012Al compounds

AU - Kumar, Pramod

AU - Kumar, Rachana

AU - Pandey, S.

AU - Suresh, K. G.

AU - Nigam, A. K.

PY - 2014/9/1

Y1 - 2014/9/1

N2 - Here we report Sm2Al and Sm1.988Gd0.012Al compounds, with orthorhombic crystal structure (space group: Pnma), showing negative magnetization in temperature dependence magnetization data. Both compounds magnetically order at ~150 and 200 K respectively and below this temperature, magnetization data shows a compensation temperature (T comp) which shifts with field. Hysteresis loops obtained below T comp signify that both Sm2Al and Sm1.988Gd 0.012Al possess exchange anisotropy. Both, exchange anisotropy field and coercive field are found to be quite large and comparable to those of the classical spin-orbit compensated ferromagnet (Sm,Gd)Al2.

AB - Here we report Sm2Al and Sm1.988Gd0.012Al compounds, with orthorhombic crystal structure (space group: Pnma), showing negative magnetization in temperature dependence magnetization data. Both compounds magnetically order at ~150 and 200 K respectively and below this temperature, magnetization data shows a compensation temperature (T comp) which shifts with field. Hysteresis loops obtained below T comp signify that both Sm2Al and Sm1.988Gd 0.012Al possess exchange anisotropy. Both, exchange anisotropy field and coercive field are found to be quite large and comparable to those of the classical spin-orbit compensated ferromagnet (Sm,Gd)Al2.

KW - Ferromagnetic

KW - Negative magnetization

KW - Spin-orbit coupling

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JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

ER -

Crystal structure and negative magnetization in Sm₂Al and Sm_1.988Gd_0.012Al compounds

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Keywords

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