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Title: Spin-reorientation phenomenon in pseudobinary (Pr sub 1 minus x R sub x )Co sub 5 compounds (R=Sm, Gd, Dy, Tb, Ho, and Er) as determined by ac susceptibility measurements

Abstract

Spin-reorientation transitions in (Pr{sub 1{minus}{ital x}}R{sub {ital x}})Co{sub 5+{delta}}, where R=Sm, Gd, Tb, Dy, Ho, and Er were determined by ac susceptibility measurements. The spin-reorientation temperature {ital T}{sub SR} of PrCo{sub 5} decreases from 105 K to lower temperatures when Pr is partially replaced by Sm, Gd, or Er. This decrease arises from different causes: the decrease of {ital T}{sub SR} in (Pr{sub 1{minus}{ital x}}Gd{sub {ital x}})Co{sub 5} results from the dilution of nonaxial anisotropy on the Pr sublattice, while the decrease of {ital T}{sub SR} in (Pr{sub 1{minus}{ital x}}Sm{sub {ital x}})Co{sub 5} and (Pr{sub 1{minus}{ital x}}Er{sub {ital x}})Co{sub 5+{delta}} is due to the positive second-order Stevens coefficients of Sm and Er which yield uniaxial anisotropies. Rare earths of negative second-order Stevens coefficients such as R=Tb and Dy give rise to axial to conical and conical to planar transitions for {ital x}{gt}0.3 and 0.4 in (Pr{sub 1{minus}{ital x}}Tb{sub {ital x}})Co{sub 5+0.1{ital x}} and (Pr{sub 1{minus}{ital x}}Dy{sub {ital x}})Co{sub 5+0.2{ital x}}, respectively. Magnetic anisotropy phase diagrams of these systems are constructed accordingly.{lt}UFMMM{gt}

Authors:
; ; ;  [1]; ;  [2]
  1. MEMS Department and Carnegie Mellon Research Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (USA)
  2. Tata Institute of Fundamental Research, Bombay 400 005, (India)
Publication Date:
OSTI Identifier:
5625334
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics; (USA)
Additional Journal Information:
Journal Volume: 69:8; Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COBALT COMPOUNDS; SPIN ORIENTATION; DYSPROSIUM COMPOUNDS; ERBIUM COMPOUNDS; GADOLINIUM COMPOUNDS; HOLMIUM COMPOUNDS; PRASEODYMIUM COMPOUNDS; SAMARIUM COMPOUNDS; TERBIUM COMPOUNDS; ANISOTROPY; HIGH TEMPERATURE; MAGNETIC SUSCEPTIBILITY; MAGNETIC PROPERTIES; ORIENTATION; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; 360104* - Metals & Alloys- Physical Properties

Citation Formats

Ma, B M, Boltich, E B, Sankar, S G, Wallace, W E, Malik, S K, and Tomy, C V. Spin-reorientation phenomenon in pseudobinary (Pr sub 1 minus x R sub x )Co sub 5 compounds (R=Sm, Gd, Dy, Tb, Ho, and Er) as determined by ac susceptibility measurements. United States: N. p., 1991. Web. doi:10.1063/1.347770.
Ma, B M, Boltich, E B, Sankar, S G, Wallace, W E, Malik, S K, & Tomy, C V. Spin-reorientation phenomenon in pseudobinary (Pr sub 1 minus x R sub x )Co sub 5 compounds (R=Sm, Gd, Dy, Tb, Ho, and Er) as determined by ac susceptibility measurements. United States. https://doi.org/10.1063/1.347770
Ma, B M, Boltich, E B, Sankar, S G, Wallace, W E, Malik, S K, and Tomy, C V. 1991. "Spin-reorientation phenomenon in pseudobinary (Pr sub 1 minus x R sub x )Co sub 5 compounds (R=Sm, Gd, Dy, Tb, Ho, and Er) as determined by ac susceptibility measurements". United States. https://doi.org/10.1063/1.347770.
@article{osti_5625334,
title = {Spin-reorientation phenomenon in pseudobinary (Pr sub 1 minus x R sub x )Co sub 5 compounds (R=Sm, Gd, Dy, Tb, Ho, and Er) as determined by ac susceptibility measurements},
author = {Ma, B M and Boltich, E B and Sankar, S G and Wallace, W E and Malik, S K and Tomy, C V},
abstractNote = {Spin-reorientation transitions in (Pr{sub 1{minus}{ital x}}R{sub {ital x}})Co{sub 5+{delta}}, where R=Sm, Gd, Tb, Dy, Ho, and Er were determined by ac susceptibility measurements. The spin-reorientation temperature {ital T}{sub SR} of PrCo{sub 5} decreases from 105 K to lower temperatures when Pr is partially replaced by Sm, Gd, or Er. This decrease arises from different causes: the decrease of {ital T}{sub SR} in (Pr{sub 1{minus}{ital x}}Gd{sub {ital x}})Co{sub 5} results from the dilution of nonaxial anisotropy on the Pr sublattice, while the decrease of {ital T}{sub SR} in (Pr{sub 1{minus}{ital x}}Sm{sub {ital x}})Co{sub 5} and (Pr{sub 1{minus}{ital x}}Er{sub {ital x}})Co{sub 5+{delta}} is due to the positive second-order Stevens coefficients of Sm and Er which yield uniaxial anisotropies. Rare earths of negative second-order Stevens coefficients such as R=Tb and Dy give rise to axial to conical and conical to planar transitions for {ital x}{gt}0.3 and 0.4 in (Pr{sub 1{minus}{ital x}}Tb{sub {ital x}})Co{sub 5+0.1{ital x}} and (Pr{sub 1{minus}{ital x}}Dy{sub {ital x}})Co{sub 5+0.2{ital x}}, respectively. Magnetic anisotropy phase diagrams of these systems are constructed accordingly.{lt}UFMMM{gt}},
doi = {10.1063/1.347770},
url = {https://www.osti.gov/biblio/5625334}, journal = {Journal of Applied Physics; (USA)},
issn = {0021-8979},
number = ,
volume = 69:8,
place = {United States},
year = {1991},
month = {4}
}