Esra Betul Koc Ozturk

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License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. We define pseudohyperbolical Smarandache curves according to the Sabban frame in Minkowski 3-space. We obtain the geodesic curvatures and the expression for the Sabban frame vectors of special pseudohyperbolic Smarandache(More)
Mn<sup>4+</sup> doped and Pr<sup>3+,4+</sup>, Sm<sup>3+</sup>, Gd<sup>3+</sup>, Tb<sup>3+,4+</sup>, Ho<sup>3+</sup>, Er<sup>3+</sup>, Tm<sup>3+</sup> and Yb<sup>3+</sup> co-doped MgAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub>-based phosphors were prepared by conventional solid state synthesis at 1300 &#x00B0;C. They were characterized by thermogravimetry (TG),(More)
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