Properties of GdMnO3/PANI/Ba(Zn1/3Nb2/3)O3 Composites For Electromagnetic Shielding Applications

Öz

In this study, GdMnO3-Ba(Zn1/3Nb2/3)O3 was manufactured using the mixture of oxides technique. GdMnO3-Ba(Zn1/3Nb2/3)O3 compositional compounds were formed in various ratios for structural analysis. Single-phase composition of GdMnO3 and Ba(Zn1/3Nb2/3)O3 were produced after sintering between 1200-1400°C. Structural analysis results showed that the second phase did not occur in GdMnO3 and Ba(Zn1/3Nb2/3)O3. X-ray diffraction (XRD) was performed for structural analysis. In addition, GdMnO3/PANI/Ba(Zn1/3Nb2/3)O3 composites were produced by hot pressing method using various amounts of GdMnO3-Ba(Zn1/3Nb2/3)O3 and aniline. The weight ratios of (GdMnO3-Ba(Zn1/3Nb2/3)O3) and aniline were 1:1, respectively. The GdMnO3/PANI/Ba(Zn1/3Nb2/3)O3 compound formed in various weights, and epoxy powder were used to produce microwave shielding effect composites. Using a network analyzer (NA), the microwave shielding effect of GdMnO3/PANI/Ba(Zn1/3Nb2/3)O3 composites was investigated in the range of 8-18 GHz. A minimum shielding effect value of -56.77 dB was obtained at 15.77 GHz at 1.4 mm thickness. The GdMnO3/PANI/Ba(Zn1/3Nb2/3)O3 was produced as composite material and their properties were characterized for shielding effect. This microwave shielding performance can be easily adjusted by controlling the polyaniline content and GdMnO3-Ba(Zn1/3Nb2/3)O3 content in the samples for wider and required frequency bands.

Anahtar Kelimeler

• XRD
• SEM
• Network Analyzer

Elektromanyetik Ekranlama Uygulamaları İçin GdMnO3/PANI/Ba(Zn1/3Nb2/3)O3 Kompozitlerin Özellikleri

Öz

Bu çalışmada, oksitlerin karışımı tekniği kullanılarak GdMnO3-Ba(Zn1/3Nb2/3)O3 üretilmiştir. GdMnO3-Ba(Zn1/3Nb2/3)O3 kompozisyon bileşimleri yapısal analiz için çeşitli oranlarda oluşturulmuştur. Tek fazlı GdMnO3 ve Ba(Zn1/3Nb2/3)O3 bileşimi, 1200-1400°C arasında sinterlendikten sonra üretilmiştir. Yapısal analizi sonuçları, GdMnO3 ve Ba(Zn1/3Nb2/3)O3 ‘de ikinci fazın oluşmadığını göstermiştir. Yapısal analiz için X-ışını kırınımı (XRD) yapıldı. Ek olarak, GdMnO3/PANI/Ba(Zn1/3Nb2/3)O3 kompozitleri çeşitli miktarlarda GdMnO3-Ba(Zn1/3Nb2/3)O3 ve anilin bileşimleri kullanılarak sıcak presleme yöntemiyle üretilmiştir. (GdMnO3-Ba(Zn1/3Nb2/3)O3) ve anilin ağırlık oranları sırasıyla 1:1 idi. Çeşitli ağırlıklarda oluşturulan GdMnO3/PANI/Ba(Zn1/3Nb2/3)O3 bileşiği ve epoksi tozu kullanılarak mikrodalga kalkanlama etkili kompozitler üretilmiştir. Bir ağ analizör cihazı (NA) kullanılarak, GdMnO3/PANI/Ba(Zn1/3Nb2/3)O3 kompozitlerinin mikrodalga ekranlama etkisi 8-18 GHz aralığında incelenmiştir. 1.4 mm kalınlıkta 15.77 GHz'de minimum -56.77 dB ekranlama etkisi değeri elde edilmiştir. GdMnO3/PANI/Ba(Zn1/3Nb2/3)O3 kompozit malzeme olarak üretilmiş ve kalkanlama etkisi için özellikleri karakterize edilmiştir. Bu mikrodalga koruma performansı, daha geniş ve gerekli frekans bantları için örneklerdeki polianilin içeriği ve GdMnO3-Ba(Zn1/3Nb2/3)O3 içeriği kontrol edilerek kolayca ayarlanabilir.

Anahtar Kelimeler

• XRD
• SEM
• Ağ Analizör

Kaynakça

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