Temperature and Magnetic Field Induced Phase Transformation in Bulk and Composite Gd5Si2Ge2

Nersesse Nersessian; Siu Wing Or; Gregory P. Carman; Wonyoung Choe; Harry B. Radousky; Vitalij K. Pecharsky; Alexandra O. Pecharsky

doi:10.1117/12.484719

Temperature and Magnetic Field Induced Phase Transformation in Bulk and Composite Gd5Si2Ge2

Nersesse Nersessian, Siu Wing Or, Gregory P. Carman, Wonyoung Choe, Harry B. Radousky, Vitalij K. Pecharsky, Alexandra O. Pecharsky

Research output: Journal article publication › Conference article › Academic research › peer-review

2 Citations (Scopus)

Abstract

A -1300ppm strain has been obtained in a [0-3], resin binder, Gd5Si2Ge2participate composite. The strain is a result of a temperature induced phase transformation from a high volume (high temperature, low magnetic field) monoclinic phase to a low volume (low temperature, high magnetic field) orthorhombic phase. The particles used in the composite were ball-milled from a bulk sample and were sieved to obtain a size distribution of ≤ 600μm. Bulk Gd5Si2Ge2was manufactured via arc melting and subsequently annealed at 1300°C for 1 hour to produce a textured, polycrystalline sample. The transformation temperatures of the bulk sample, as measured using a Differential Scanning Calorimeter (DSC), were Ms= -9.3°C, Mf= -14.6°C, As= -4.4°C, and Af= -1.2°C. The bulk sample was magnetically characterized using a SQUID magnetometer, and found to undergo a paramagnetic to ferromagnetic transition during the phase transformation, consistent with published results. The bulk sample was also found to possess a - 8000ppm volume magnetostriction, agreeing well with measured unit cell parameters of the different phases.

Original language	English
Pages (from-to)	25-30
Number of pages	6
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5053
DOIs	https://doi.org/10.1117/12.484719
Publication status	Published - 27 Nov 2003
Externally published	Yes
Event	PROCEEDINGS OF SPIE SPIE - The International Society for Optical Engineering: Smart Structures and Materials 2003 Active Materials: Behavior and Mechanics - San Diego, CA, United States Duration: 3 Mar 2003 → 6 Mar 2003

Keywords

[0-3] Composites
Gd Si Ge 5 2 2
Phase transformationy
Volume Magnetostriction

ASJC Scopus subject areas

Electrical and Electronic Engineering
Condensed Matter Physics

More information

10.1117/12.484719

Cite this

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title = "Temperature and Magnetic Field Induced Phase Transformation in Bulk and Composite Gd5Si2Ge2",

abstract = "A -1300ppm strain has been obtained in a [0-3], resin binder, Gd5Si2Ge2participate composite. The strain is a result of a temperature induced phase transformation from a high volume (high temperature, low magnetic field) monoclinic phase to a low volume (low temperature, high magnetic field) orthorhombic phase. The particles used in the composite were ball-milled from a bulk sample and were sieved to obtain a size distribution of ≤ 600μm. Bulk Gd5Si2Ge2was manufactured via arc melting and subsequently annealed at 1300°C for 1 hour to produce a textured, polycrystalline sample. The transformation temperatures of the bulk sample, as measured using a Differential Scanning Calorimeter (DSC), were Ms= -9.3°C, Mf= -14.6°C, As= -4.4°C, and Af= -1.2°C. The bulk sample was magnetically characterized using a SQUID magnetometer, and found to undergo a paramagnetic to ferromagnetic transition during the phase transformation, consistent with published results. The bulk sample was also found to possess a - 8000ppm volume magnetostriction, agreeing well with measured unit cell parameters of the different phases.",

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Temperature and Magnetic Field Induced Phase Transformation in Bulk and Composite Gd5Si2Ge2. / Nersessian, Nersesse; Or, Siu Wing; Carman, Gregory P. et al.
In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 5053, 27.11.2003, p. 25-30.

Research output: Journal article publication › Conference article › Academic research › peer-review

TY - JOUR

T1 - Temperature and Magnetic Field Induced Phase Transformation in Bulk and Composite Gd5Si2Ge2

AU - Nersessian, Nersesse

AU - Or, Siu Wing

AU - Carman, Gregory P.

AU - Choe, Wonyoung

AU - Radousky, Harry B.

AU - Pecharsky, Vitalij K.

AU - Pecharsky, Alexandra O.

PY - 2003/11/27

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N2 - A -1300ppm strain has been obtained in a [0-3], resin binder, Gd5Si2Ge2participate composite. The strain is a result of a temperature induced phase transformation from a high volume (high temperature, low magnetic field) monoclinic phase to a low volume (low temperature, high magnetic field) orthorhombic phase. The particles used in the composite were ball-milled from a bulk sample and were sieved to obtain a size distribution of ≤ 600μm. Bulk Gd5Si2Ge2was manufactured via arc melting and subsequently annealed at 1300°C for 1 hour to produce a textured, polycrystalline sample. The transformation temperatures of the bulk sample, as measured using a Differential Scanning Calorimeter (DSC), were Ms= -9.3°C, Mf= -14.6°C, As= -4.4°C, and Af= -1.2°C. The bulk sample was magnetically characterized using a SQUID magnetometer, and found to undergo a paramagnetic to ferromagnetic transition during the phase transformation, consistent with published results. The bulk sample was also found to possess a - 8000ppm volume magnetostriction, agreeing well with measured unit cell parameters of the different phases.

AB - A -1300ppm strain has been obtained in a [0-3], resin binder, Gd5Si2Ge2participate composite. The strain is a result of a temperature induced phase transformation from a high volume (high temperature, low magnetic field) monoclinic phase to a low volume (low temperature, high magnetic field) orthorhombic phase. The particles used in the composite were ball-milled from a bulk sample and were sieved to obtain a size distribution of ≤ 600μm. Bulk Gd5Si2Ge2was manufactured via arc melting and subsequently annealed at 1300°C for 1 hour to produce a textured, polycrystalline sample. The transformation temperatures of the bulk sample, as measured using a Differential Scanning Calorimeter (DSC), were Ms= -9.3°C, Mf= -14.6°C, As= -4.4°C, and Af= -1.2°C. The bulk sample was magnetically characterized using a SQUID magnetometer, and found to undergo a paramagnetic to ferromagnetic transition during the phase transformation, consistent with published results. The bulk sample was also found to possess a - 8000ppm volume magnetostriction, agreeing well with measured unit cell parameters of the different phases.

KW - [0-3] Composites

KW - Gd Si Ge 5 2 2

KW - Phase transformationy

KW - Volume Magnetostriction

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DO - 10.1117/12.484719

M3 - Conference article

SN - 0277-786X

VL - 5053

SP - 25

EP - 30

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - PROCEEDINGS OF SPIE SPIE - The International Society for Optical Engineering: Smart Structures and Materials 2003 Active Materials: Behavior and Mechanics

Y2 - 3 March 2003 through 6 March 2003

ER -

Temperature and Magnetic Field Induced Phase Transformation in Bulk and Composite Gd5Si2Ge2

Abstract

Keywords

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