Observation of enhanced magnetic anisotropy in PLD YIG thin film on GGG (1 1 1) substrate

Biswanath Bhoi; N. Venkataramani; Shiva Prasad; R. P.R.C. Aiyar; Gulshan Kumar; I. Samajdar; M. Kostylev

doi:10.1016/j.jmmm.2019.03.111

Observation of enhanced magnetic anisotropy in PLD YIG thin film on GGG (1 1 1) substrate

Biswanath Bhoi, N. Venkataramani, Shiva Prasad, R. P.R.C. Aiyar, Gulshan Kumar, I. Samajdar, M. Kostylev

School of Physics, Mathematics and Computing

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

Magnetic properties and FMR of pulsed laser deposited Y ₃ Fe ₅ O ₁₂ (YIG) thin film on Gd ₃ Ga ₅ O ₁₂ (1 1 1) substrate have been investigated in the temperature range 4.2 ≤ T ≤ 300 K. The effective saturation magnetization (4πM _eff ), obtained from Ferromagnetic Resonance at room temperature, is found to be 2600 G, which is higher than SQUID measured 4πM _S value of 1770 G. This implies that the value of 4πM _eff can only be accounted by considering a negative anisotropy field (H _U ) of around 830 Oe at room temperature. Such an anisotropy is attributed to a compressive stress (−1.70 × 10 ¹⁰ dyne/cm ² ) induced in the film closer to the film-air interface. The presence of this stress in YIG film was confirmed using multiple {hkl} stress measurements with grazing incidence X-ray diffraction performed at different depth of penetration on the YIG film.

Original language	English
Pages (from-to)	191-195
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	483
DOIs	https://doi.org/10.1016/j.jmmm.2019.03.111
Publication status	Published - 1 Aug 2019

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@article{6f374456d1b64f97925cd9793620f53c,

title = "Observation of enhanced magnetic anisotropy in PLD YIG thin film on GGG (1 1 1) substrate",

abstract = " Magnetic properties and FMR of pulsed laser deposited Y 3 Fe 5 O 12 (YIG) thin film on Gd 3 Ga 5 O 12 (1 1 1) substrate have been investigated in the temperature range 4.2 ≤ T ≤ 300 K. The effective saturation magnetization (4πM eff ), obtained from Ferromagnetic Resonance at room temperature, is found to be 2600 G, which is higher than SQUID measured 4πM S value of 1770 G. This implies that the value of 4πM eff can only be accounted by considering a negative anisotropy field (H U ) of around 830 Oe at room temperature. Such an anisotropy is attributed to a compressive stress (−1.70 × 10 10 dyne/cm 2 ) induced in the film closer to the film-air interface. The presence of this stress in YIG film was confirmed using multiple {hkl} stress measurements with grazing incidence X-ray diffraction performed at different depth of penetration on the YIG film. ",

author = "Biswanath Bhoi and N. Venkataramani and Shiva Prasad and Aiyar, {R. P.R.C.} and Gulshan Kumar and I. Samajdar and M. Kostylev",

year = "2019",

month = aug,

day = "1",

doi = "10.1016/j.jmmm.2019.03.111",

language = "English",

volume = "483",

pages = "191--195",

journal = "Journal of Magnetism & Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

}

TY - JOUR

T1 - Observation of enhanced magnetic anisotropy in PLD YIG thin film on GGG (1 1 1) substrate

AU - Bhoi, Biswanath

AU - Venkataramani, N.

AU - Prasad, Shiva

AU - Aiyar, R. P.R.C.

AU - Kumar, Gulshan

AU - Samajdar, I.

AU - Kostylev, M.

PY - 2019/8/1

Y1 - 2019/8/1

N2 - Magnetic properties and FMR of pulsed laser deposited Y 3 Fe 5 O 12 (YIG) thin film on Gd 3 Ga 5 O 12 (1 1 1) substrate have been investigated in the temperature range 4.2 ≤ T ≤ 300 K. The effective saturation magnetization (4πM eff ), obtained from Ferromagnetic Resonance at room temperature, is found to be 2600 G, which is higher than SQUID measured 4πM S value of 1770 G. This implies that the value of 4πM eff can only be accounted by considering a negative anisotropy field (H U ) of around 830 Oe at room temperature. Such an anisotropy is attributed to a compressive stress (−1.70 × 10 10 dyne/cm 2 ) induced in the film closer to the film-air interface. The presence of this stress in YIG film was confirmed using multiple {hkl} stress measurements with grazing incidence X-ray diffraction performed at different depth of penetration on the YIG film.

AB - Magnetic properties and FMR of pulsed laser deposited Y 3 Fe 5 O 12 (YIG) thin film on Gd 3 Ga 5 O 12 (1 1 1) substrate have been investigated in the temperature range 4.2 ≤ T ≤ 300 K. The effective saturation magnetization (4πM eff ), obtained from Ferromagnetic Resonance at room temperature, is found to be 2600 G, which is higher than SQUID measured 4πM S value of 1770 G. This implies that the value of 4πM eff can only be accounted by considering a negative anisotropy field (H U ) of around 830 Oe at room temperature. Such an anisotropy is attributed to a compressive stress (−1.70 × 10 10 dyne/cm 2 ) induced in the film closer to the film-air interface. The presence of this stress in YIG film was confirmed using multiple {hkl} stress measurements with grazing incidence X-ray diffraction performed at different depth of penetration on the YIG film.

UR - http://www.scopus.com/inward/record.url?scp=85063604639&partnerID=8YFLogxK

U2 - 10.1016/j.jmmm.2019.03.111

DO - 10.1016/j.jmmm.2019.03.111

M3 - Article

AN - SCOPUS:85063604639

VL - 483

SP - 191

EP - 195

JO - Journal of Magnetism & Magnetic Materials

JF - Journal of Magnetism & Magnetic Materials

SN - 0304-8853

ER -

Observation of enhanced magnetic anisotropy in PLD YIG thin film on GGG (1 1 1) substrate

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Observation of enhanced magnetic anisotropy in PLD YIG thin film on GGG (1 1 1) substrate