Magnetic field effects on float-zone Si crystal growth

Robertson, Glenn D.; O'Connor, Dennis J.

doi:10.1016/0022-0248(86)90016-3

Cited by 45 publications

(14 citation statements)

References 8 publications

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“…For silicon growth, magnetic fields have been known useful in suppressing the unsteady flows, so that a steady growth can be obtained and the grown crystal is striation free [1,3]. Both axial [1,3] and transversal magnetic fields [4,5] have been studied. To these experimental studies, numerical simulation should be useful to get a deeper understanding of the flow and segregation control by the magnetic field.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional simulation of heat flow, segregation, and zone shape in floating-zone silicon growth under axial and transversal magnetic fields

Lan

Yeh

2004

Journal of Crystal Growth

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Section: Introductionmentioning

confidence: 99%

Three-dimensional simulation of heat flow, segregation, and zone shape in floating-zone silicon growth under axial and transversal magnetic fields

Lan

Yeh

2004

Journal of Crystal Growth

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“…Applied magnetic fields have the ability to modify significantly the solidification process of alloys in regards to the grain size, crystal growth, and the solute or inclusion distribution12345678910. As is well-known, static magnetic fields are capable of damping flow and enhancing the growth of columnar dendrite1112.…”

mentioning

confidence: 99%

Formation mechanism of axial macrosegregation of primary phases induced by a static magnetic field during directional solidification

Xi¹,

Fautrelle²,

Ren³

et al. 2017

Sci Rep

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Understanding the macrosegregation formed by applying magnetic fields is of high commercial importance. This work investigates how static magnetic fields control the solute and primary phase distributions in four directionally solidified alloys (i.e., Al-Cu, Al-Si, Al-Ni and Zn-Cu alloys). Experimental results demonstrate that significant axial macrosegregation of the solute and primary phases (i.e., Al2Cu, Si, Al3Ni and Zn5Cu phases) occurs at the initial solidification stage of the samples. This finding is accompanied by two interface transitions in the mushy zone: quasi planar → sloping → quasi planar. The amplitude of the macrosegregation of the primary phases under the magnetic field is related to the magnetic field intensity, temperature gradient and growth speed. The corresponding numerical simulations present a unidirectional thermoelectric (TE) magnetic convection pattern in the mushy zone as a consequence of the interaction between the magnetic field and TE current. Furthermore, a model is proposed to explain the peculiar macrosegregation phenomenon by considering the effect of the forced TE magnetic convection on the solute distribution. The present study not only offers a new approach to control the solute distribution by applying a static magnetic field but also facilitates the understanding of crystal growth in the solute that is controlled by the static magnetic field during directional solidification.

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“…The main source for the inhomogeneous resistivity (dopant) distribution is the time-dependent flow (mainly dominated by Marangoni convection) in the melt during the growth process [55]. The pioneering work of applying a VMF in the FZ technique was done by De Leon et al [56] and Robertson and O'Connor [57]. The pioneering work of applying a VMF in the FZ technique was done by De Leon et al [56] and Robertson and O'Connor [57].…”

Section: Floating Zonementioning

confidence: 99%

Flow Control by Magnetic Fields during Crystal Growth from Melt

Vizman

2015

Handbook of Crystal Growth

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Magnetic field effects on float-zone Si crystal growth

Cited by 45 publications

References 8 publications

Three-dimensional simulation of heat flow, segregation, and zone shape in floating-zone silicon growth under axial and transversal magnetic fields

Three-dimensional simulation of heat flow, segregation, and zone shape in floating-zone silicon growth under axial and transversal magnetic fields

Formation mechanism of axial macrosegregation of primary phases induced by a static magnetic field during directional solidification

Flow Control by Magnetic Fields during Crystal Growth from Melt

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