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

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)191-195
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Volume483
DOIs
Publication statusPublished - 1 Aug 2019

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gadolinium-gallium garnet
Magnetic anisotropy
yttrium-iron garnet
Pulsed laser deposition
Thin films
Ferromagnetic resonance
anisotropy
Substrates
thin films
Anisotropy
stress measurement
Stress measurement
SQUIDs
room temperature
ferromagnetic resonance
Saturation magnetization
Pulsed lasers
Compressive stress
grazing incidence
Temperature

Cite this

Bhoi, Biswanath ; Venkataramani, N. ; Prasad, Shiva ; Aiyar, R. P.R.C. ; Kumar, Gulshan ; Samajdar, I. ; Kostylev, M. / Observation of enhanced magnetic anisotropy in PLD YIG thin film on GGG (1 1 1) substrate. In: Journal of Magnetism and Magnetic Materials. 2019 ; Vol. 483. pp. 191-195.
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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.",
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Observation of enhanced magnetic anisotropy in PLD YIG thin film on GGG (1 1 1) substrate. / Bhoi, Biswanath; Venkataramani, N.; Prasad, Shiva; Aiyar, R. P.R.C.; Kumar, Gulshan; Samajdar, I.; Kostylev, M.

In: Journal of Magnetism and Magnetic Materials, Vol. 483, 01.08.2019, p. 191-195.

Research output: Contribution to journalArticle

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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.

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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.

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