Notice (8): Trying to get property of non-object [APP/Controller/ArticlesController.php, line 300]

                $Issues_articles_image=$this->loadModel('Issues')->find('all')->where(['status'=>'1','admin_delete'=>'0','id'=>$article->volume])->order(['id' => 'DESC'])->first();
        
                $coverimage_artciles='/aml/uploads/coverimage/'.$Issues_articles_image->coverimage_file;

$id = '767'
$issue = object(Cake\ORM\Table) {

	'registryAlias' => 'Issues',
	'table' => 'issues',
	'alias' => 'Issues',
	'entityClass' => '\Cake\ORM\Entity',
	'associations' => [],
	'behaviors' => [],
	'defaultConnection' => 'default',
	'connectionName' => 'default'

}
$article_current = object(Cake\ORM\Table) {

	'registryAlias' => 'Articles',
	'table' => 'articles',
	'alias' => 'Articles',
	'entityClass' => '\Cake\ORM\Entity',
	'associations' => [],
	'behaviors' => [],
	'defaultConnection' => 'default',
	'connectionName' => 'default'

}
$article = object(Cake\ORM\Entity) {

	'id' => (int) 767,
	'user_id' => (int) 0,
	'volume' => (int) 72,
	'volumeno' => (int) 7,
	'issuseno' => (int) 1,
	'issusemonth' => 'January',
	'issuseyear' => '2016',
	'title' => '<p>Electronic Structure Study And Dielectric Properties Of Amorphous ZrO<sub>2</sub> And HfO<sub>2</sub></p>
',
	'meta_title' => 'Electronic structure study and dielectric properties of amorphous ZrO2 and HfO2',
	'meta_desc' => 'Electronic structure study and dielectric properties of amorphous ZrO2 and HfO2',
	'meta_keyword' => 'XRD, XPS,  XAS, nanoparticles.',
	'alias_name' => 'electronicstructurestudyanddielectricpropertiesofamorphouszro2andhfo2',
	'authorname' => '<p>Aditya Sharma<sup>1*</sup>, Mayora Varshney<sup>1</sup>, Sejun Kang<sup>1</sup>, Jaeyoon Baik<sup>1</sup>, Tae-Kyun Ha<sup>1</sup>,&nbsp; Keun-Hwa Chae<sup>2</sup>, Shalendra Kumar<sup>3</sup> and Hyun-Joon Shin<sup>1</sup></p>
',
	'authorfrontname' => 'Aditya Sharma, Mayora Varshney, Sejun Kang, Jaeyoon Baik, Tae-Kyun Ha1,Keun-Hwa Chae, Shalendra Kumar and Hyun-Joon Shin',
	'authoraffiliation' => '<p><em><sup>1</sup></em><em>Beam Line Division, Pohang Accelerator Laboratory, POSTECH, Pohang 790-784, South Korea</em></p>

<p><em><sup>2</sup></em><em>Korea Institute of Science and Technology, Seoul 136-791, South Korea</em></p>

<p><em><sup>3</sup></em><em>School of Materials Science and Engineering, Changwon National University, 9 Sarim dong, Changwon 641-773, South Korea</em></p>
',
	'authoremail' => '<p>E-mail: adityaiuac@gmail.com, shj001@postech.ac.kr</p>
',
	'authorbiography' => '',
	'page' => '17-22',
	'pagesequence' => '4',
	'doi' => '10.5185/amlett.2016.6136',
	'articletype' => '1',
	'keyword' => '<p>XRD, XPS, XAS, nanoparticles.</p>
',
	'abstractpdf' => null,
	'abstractdec' => '<p style="text-align:justify"><span style="font-family:helvetica,sans-serif; font-size:10pt">ZrO<sub>2</sub> and HfO<sub>2</sub> powder samples were prepared by using the chemical precipitation method and subsequent annealing. Crystal structure, local electronic structure and dielectric constant of amorphous and crystalline powders of ZrO<sub>2</sub> and HfO<sub>2</sub> have been examined using the synchrotron X-ray diffraction, O K-edge X-ray absorption spectroscopy, Zr <em>3d</em> and Hf <em>4f</em> core-level X-ray photoelectron spectroscopy and temperature dependent dielectric measurements, respectively. Amorphous ZrO<sub>2</sub> and HfO<sub>2</sub> powders exhibit a local tetragonal structure, with mixed +3 and +4 valence states of Zr and Hf ions, and demonstrated the high dielectric performance. After the heat treatment, the tetragonal phase transforms into the monoclinic phase with dominant +4 valence state of Zr and Hf ions and the larger sized ZrO<sub>2</sub> and HfO<sub>2</sub> nanoparticles exhibited low dielectric constant. The manifestation of high dielectric constants in the amorphous ZrO<sub>2</sub> and HfO<sub>2</sub> samples is because of the hopping of electrons between the Zr<sup>+3</sup>-Zr<sup>+4</sup> and Hf<sup>+3</sup>-Hf<sup>+4</sup> networks.&nbsp;</span></p>
',
	'fullabstractpdf' => '5679767a373ec1450800762_fullabstratct.pdf',
	'fullabstractdesc' => '',
	'supporting_information' => null,
	'tocimage' => '',
	'received' => '',
	'accepted_for_publication' => '',
	'checked_for_plagiarism' => 'Yes',
	'review_by' => '',
	'peer_reviewers_approved_by' => '',
	'peer_reviewer_comments' => '',
	'editor_who_approved_publication' => '',
	'created' => object(Cake\I18n\FrozenTime) {},
	'modified' => '2015-12-22 09:12:42',
	'sequence' => (int) 4,
	'status' => (int) 1,
	'published' => (int) 1,
	'mostcitedissue' => (int) 0,
	'view_counts' => (int) 0,
	'count_download' => (int) 0,
	'admin_delete' => (int) 0,
	'citation_author' => null,
	'citation_author_institution' => null,
	'last_page' => (int) 0,
	'article_html_data' => null,
	'refernece' => null,
	'[new]' => false,
	'[accessible]' => [
		'*' => true
	],
	'[dirty]' => [],
	'[original]' => [],
	'[virtual]' => [],
	'[errors]' => [],
	'[invalid]' => [],
	'[repository]' => 'Articles'

}
$issue_article = 'Volume 7, Issue 1, Article ID  17-22, January 2016'
$Issues_articles_image = null
$coverimage_artciles = ''
$coverimage_desc = ''
$issue_data = object(Cake\ORM\Entity) {

	'id' => (int) 527,
	'type' => '21',
	'volumenumber' => '12',
	'issusenumber' => '3',
	'issusemonth' => 'March',
	'issuseyear' => '2021',
	'pageno' => '21031607-21031615',
	'sequence' => (int) 1,
	'coverimage_file' => 'March_1609938278.jpg',
	'coverimagepdf_file' => null,
	'coverimage_desc' => '<p style="text-align: justify;">Development of sustainable energy materials is becoming more and more important to tackle the challenges of energy innovation and technology. It will also act like an appliance for social progress, economic growth, poverty reduction, equity, and environmental sustainability. The cover photo of the March 2021 issue of Advanced Materials Letters is inspired from the 07th point of United Nation&rsquo;s Sustainable Development Goals, &ldquo;Ensure access to affordable, reliable, sustainable and modern energy for all&rdquo; and the agenda of the International Association of Advanced Materials for 2030 decade, &quot;Advancement of Materials to Green and Sustainable World&quot;.</p>
',
	'download_count' => (int) 0,
	'admin_delete' => (int) 0,
	'status' => (int) 1,
	'created' => null,
	'modified' => null,
	'[new]' => false,
	'[accessible]' => [
		'*' => true
	],
	'[dirty]' => [],
	'[original]' => [],
	'[virtual]' => [],
	'[errors]' => [],
	'[invalid]' => [],
	'[repository]' => 'Issues'

}

App\Controller\ArticlesController::details() - APP/Controller/ArticlesController.php, line 300
Cake\Controller\Controller::invokeAction() - CORE/src/Controller/Controller.php, line 429
Cake\Routing\Dispatcher::_invoke() - CORE/src/Routing/Dispatcher.php, line 114
Cake\Routing\Dispatcher::dispatch() - CORE/src/Routing/Dispatcher.php, line 87
[main] - ROOT/webroot/index.php, line 51

Notice (8): Trying to get property of non-object [APP/Controller/ArticlesController.php, line 302]

Code Context

                $coverimage_artciles='/aml/uploads/coverimage/'.$Issues_articles_image->coverimage_file;
        
                $coverimage_desc=$Issues_articles_image->coverimage_desc;

$id = '767'
$issue = object(Cake\ORM\Table) {

	'registryAlias' => 'Issues',
	'table' => 'issues',
	'alias' => 'Issues',
	'entityClass' => '\Cake\ORM\Entity',
	'associations' => [],
	'behaviors' => [],
	'defaultConnection' => 'default',
	'connectionName' => 'default'

}
$article_current = object(Cake\ORM\Table) {

	'registryAlias' => 'Articles',
	'table' => 'articles',
	'alias' => 'Articles',
	'entityClass' => '\Cake\ORM\Entity',
	'associations' => [],
	'behaviors' => [],
	'defaultConnection' => 'default',
	'connectionName' => 'default'

}
$article = object(Cake\ORM\Entity) {

	'id' => (int) 767,
	'user_id' => (int) 0,
	'volume' => (int) 72,
	'volumeno' => (int) 7,
	'issuseno' => (int) 1,
	'issusemonth' => 'January',
	'issuseyear' => '2016',
	'title' => '<p>Electronic Structure Study And Dielectric Properties Of Amorphous ZrO<sub>2</sub> And HfO<sub>2</sub></p>
',
	'meta_title' => 'Electronic structure study and dielectric properties of amorphous ZrO2 and HfO2',
	'meta_desc' => 'Electronic structure study and dielectric properties of amorphous ZrO2 and HfO2',
	'meta_keyword' => 'XRD, XPS,  XAS, nanoparticles.',
	'alias_name' => 'electronicstructurestudyanddielectricpropertiesofamorphouszro2andhfo2',
	'authorname' => '<p>Aditya Sharma<sup>1*</sup>, Mayora Varshney<sup>1</sup>, Sejun Kang<sup>1</sup>, Jaeyoon Baik<sup>1</sup>, Tae-Kyun Ha<sup>1</sup>,&nbsp; Keun-Hwa Chae<sup>2</sup>, Shalendra Kumar<sup>3</sup> and Hyun-Joon Shin<sup>1</sup></p>
',
	'authorfrontname' => 'Aditya Sharma, Mayora Varshney, Sejun Kang, Jaeyoon Baik, Tae-Kyun Ha1,Keun-Hwa Chae, Shalendra Kumar and Hyun-Joon Shin',
	'authoraffiliation' => '<p><em><sup>1</sup></em><em>Beam Line Division, Pohang Accelerator Laboratory, POSTECH, Pohang 790-784, South Korea</em></p>

<p><em><sup>2</sup></em><em>Korea Institute of Science and Technology, Seoul 136-791, South Korea</em></p>

<p><em><sup>3</sup></em><em>School of Materials Science and Engineering, Changwon National University, 9 Sarim dong, Changwon 641-773, South Korea</em></p>
',
	'authoremail' => '<p>E-mail: adityaiuac@gmail.com, shj001@postech.ac.kr</p>
',
	'authorbiography' => '',
	'page' => '17-22',
	'pagesequence' => '4',
	'doi' => '10.5185/amlett.2016.6136',
	'articletype' => '1',
	'keyword' => '<p>XRD, XPS, XAS, nanoparticles.</p>
',
	'abstractpdf' => null,
	'abstractdec' => '<p style="text-align:justify"><span style="font-family:helvetica,sans-serif; font-size:10pt">ZrO<sub>2</sub> and HfO<sub>2</sub> powder samples were prepared by using the chemical precipitation method and subsequent annealing. Crystal structure, local electronic structure and dielectric constant of amorphous and crystalline powders of ZrO<sub>2</sub> and HfO<sub>2</sub> have been examined using the synchrotron X-ray diffraction, O K-edge X-ray absorption spectroscopy, Zr <em>3d</em> and Hf <em>4f</em> core-level X-ray photoelectron spectroscopy and temperature dependent dielectric measurements, respectively. Amorphous ZrO<sub>2</sub> and HfO<sub>2</sub> powders exhibit a local tetragonal structure, with mixed +3 and +4 valence states of Zr and Hf ions, and demonstrated the high dielectric performance. After the heat treatment, the tetragonal phase transforms into the monoclinic phase with dominant +4 valence state of Zr and Hf ions and the larger sized ZrO<sub>2</sub> and HfO<sub>2</sub> nanoparticles exhibited low dielectric constant. The manifestation of high dielectric constants in the amorphous ZrO<sub>2</sub> and HfO<sub>2</sub> samples is because of the hopping of electrons between the Zr<sup>+3</sup>-Zr<sup>+4</sup> and Hf<sup>+3</sup>-Hf<sup>+4</sup> networks.&nbsp;</span></p>
',
	'fullabstractpdf' => '5679767a373ec1450800762_fullabstratct.pdf',
	'fullabstractdesc' => '',
	'supporting_information' => null,
	'tocimage' => '',
	'received' => '',
	'accepted_for_publication' => '',
	'checked_for_plagiarism' => 'Yes',
	'review_by' => '',
	'peer_reviewers_approved_by' => '',
	'peer_reviewer_comments' => '',
	'editor_who_approved_publication' => '',
	'created' => object(Cake\I18n\FrozenTime) {},
	'modified' => '2015-12-22 09:12:42',
	'sequence' => (int) 4,
	'status' => (int) 1,
	'published' => (int) 1,
	'mostcitedissue' => (int) 0,
	'view_counts' => (int) 0,
	'count_download' => (int) 0,
	'admin_delete' => (int) 0,
	'citation_author' => null,
	'citation_author_institution' => null,
	'last_page' => (int) 0,
	'article_html_data' => null,
	'refernece' => null,
	'[new]' => false,
	'[accessible]' => [
		'*' => true
	],
	'[dirty]' => [],
	'[original]' => [],
	'[virtual]' => [],
	'[errors]' => [],
	'[invalid]' => [],
	'[repository]' => 'Articles'

}
$issue_article = 'Volume 7, Issue 1, Article ID  17-22, January 2016'
$Issues_articles_image = null
$coverimage_artciles = '/aml/uploads/coverimage/'
$coverimage_desc = ''
$issue_data = object(Cake\ORM\Entity) {

	'id' => (int) 527,
	'type' => '21',
	'volumenumber' => '12',
	'issusenumber' => '3',
	'issusemonth' => 'March',
	'issuseyear' => '2021',
	'pageno' => '21031607-21031615',
	'sequence' => (int) 1,
	'coverimage_file' => 'March_1609938278.jpg',
	'coverimagepdf_file' => null,
	'coverimage_desc' => '<p style="text-align: justify;">Development of sustainable energy materials is becoming more and more important to tackle the challenges of energy innovation and technology. It will also act like an appliance for social progress, economic growth, poverty reduction, equity, and environmental sustainability. The cover photo of the March 2021 issue of Advanced Materials Letters is inspired from the 07th point of United Nation&rsquo;s Sustainable Development Goals, &ldquo;Ensure access to affordable, reliable, sustainable and modern energy for all&rdquo; and the agenda of the International Association of Advanced Materials for 2030 decade, &quot;Advancement of Materials to Green and Sustainable World&quot;.</p>
',
	'download_count' => (int) 0,
	'admin_delete' => (int) 0,
	'status' => (int) 1,
	'created' => null,
	'modified' => null,
	'[new]' => false,
	'[accessible]' => [
		'*' => true
	],
	'[dirty]' => [],
	'[original]' => [],
	'[virtual]' => [],
	'[errors]' => [],
	'[invalid]' => [],
	'[repository]' => 'Issues'

}

App\Controller\ArticlesController::details() - APP/Controller/ArticlesController.php, line 302
Cake\Controller\Controller::invokeAction() - CORE/src/Controller/Controller.php, line 429
Cake\Routing\Dispatcher::_invoke() - CORE/src/Routing/Dispatcher.php, line 114
Cake\Routing\Dispatcher::dispatch() - CORE/src/Routing/Dispatcher.php, line 87
[main] - ROOT/webroot/index.php, line 51

Electronic Structure Study And Dielectric Properties Of Amorphous ZrO2 And HfO2

Aditya Sharma^1*, Mayora Varshney¹, Sejun Kang¹, Jaeyoon Baik¹, Tae-Kyun Ha¹, Keun-Hwa Chae², Shalendra Kumar³ and Hyun-Joon Shin¹

¹Beam Line Division, Pohang Accelerator Laboratory, POSTECH, Pohang 790-784, South Korea

²Korea Institute of Science and Technology, Seoul 136-791, South Korea

³School of Materials Science and Engineering, Changwon National University, 9 Sarim dong, Changwon 641-773, South Korea

Adv. Mater. Lett., 2016, 7 (1), pp 17-22

DOI: 10.5185/amlett.2016.6136

Publication Date (Web): Dec 22, 2015

E-mail: adityaiuac@gmail.com, shj001@postech.ac.kr

Full Article

Abstract

ZrO₂ and HfO₂ powder samples were prepared by using the chemical precipitation method and subsequent annealing. Crystal structure, local electronic structure and dielectric constant of amorphous and crystalline powders of ZrO₂ and HfO₂ have been examined using the synchrotron X-ray diffraction, O K-edge X-ray absorption spectroscopy, Zr 3d and Hf 4f core-level X-ray photoelectron spectroscopy and temperature dependent dielectric measurements, respectively. Amorphous ZrO₂ and HfO₂ powders exhibit a local tetragonal structure, with mixed +3 and +4 valence states of Zr and Hf ions, and demonstrated the high dielectric performance. After the heat treatment, the tetragonal phase transforms into the monoclinic phase with dominant +4 valence state of Zr and Hf ions and the larger sized ZrO₂ and HfO₂ nanoparticles exhibited low dielectric constant. The manifestation of high dielectric constants in the amorphous ZrO₂ and HfO₂ samples is because of the hopping of electrons between the Zr⁺³-Zr⁺⁴ and Hf⁺³-Hf⁺⁴ networks.